HOW TO USE THIS FILE

CONTENTS
Appendixes                        2--1
Count Corrections                 2--2
Data Dictionary                   2--1
Documentation Chapters            2--1
Special Area Codes                2--3
Standard Codes                    2--3
Summary-Level Sequence Charts and
 Geographic Area Component Codes  2--3
User Notes                        2--1
Using the File                    2--2

This chapter serves as a guide for data users to both the tape and the
technical documentation.  Novice users trying to understand how to use the
documentation and the file should read this chapter first.

DOCUMENTATION CHAPTERS

The Abstract chapter in this documentation provides a quick overview of the
file, including the formal title, geographic coverage, subject coverage,
and file availability.  Also shown are citations for related reference
materials and printed reports.  Their titles and geography are included in
this section, along with purchasing information.

The Subject Locator is an aid to finding which tables provide the
information needed.  The List of Tables (Matrices) and the Table (Matrix)
Outlines provide two types of presentations for the tables available in the
file.  The List of Tables (Matrices) has the table titles and universes.

The Table (Matrix) Outlines offer a detailed presentation of the tables.
When reviewing the tables, remember that a colon (:) following an entry
indicates the entry is a heading, not a data cell.

USER NOTES

Information about file or documentation changes sometimes becomes available
after the documentation has been printed.  User notes inform the user
community about these changes.  These are issued in a numbered series.  If
there are technical documentation changes, revised pages usually accompany
them.  The revised pages should be inserted in their proper location, but
the user note cover sheet should be filed in the User Notes chapter.
Technical notes, which contain file errata, are also issued by the Census
Bureau.  We suggest filing these following appendix I.

DATA DICTIONARY

The data dictionary describes the file and provides character locations for
each variable and each table.  It has two elements, the identification
section and the table (matrix) section.

In the identification section, the components include the field name; the
data dictionary reference name, a short mnemonic for use with software
packages; field size; starting position; and data type (alphabetic, nu-
meric, or alphanumeric).

The identification section of the data dictionary is identical for all
summary tape files.  It provides a list of the geographic codes or refers
the user to the appropriate source.  Review the footnotes carefully; they
provide explanations for various terms.  These footnotes are listed at the
end of the identification section of the data dictionary.

The table (matrix) section provides information on the table (matrix)
number; table (matrix) description; number of implied decimals in each cell
(if not 0); starting position within the record, within the segment, and
for all cells within the first-level variable; and cell coordinates.

APPENDIXES

Detailed information on geographic areas is in appendix A followed by
subject-matter definitions in appendix B.  Appendix C provides detailed
statistical information about the data while appendix D outlines the data
collection and processing procedures.  Facsimiles of both the respondent
instructions and 1990 census long-form questionnaire are in appendix E.

Appendix F furnishes detailed information on all the data products of the
1990 census, as well as suggested sources of information and assistance.
Map information is included in appendix G.

Appendix H contains the code lists used in processing the data.  These are
especially helpful in determining the components included in categories
such as race or group quarters.  These codes are used in conjunction with
the table (matrix) outlines and data dictionary chapters.  In the file
presentation included in those chapters, some cell entries are followed by
numeric codes in parentheses.  These are the codes included in that cell.
For example, in a table including race, the entry for Asian or Pacific
Islander is followed by (600-699, 976-985).  The code list for race in
appendix H identifies all the race codes included in the Asian or Pacific
Islander category.

Appendix I provides CD-ROM specific information.

COUNT CORRECTIONS

The Census Bureau issues population count corrections on an occasional
basis.  Count corrections for geography at the place level and above are
available from Customer Services, Data User Services Division, Bureau of
the Census, Washington, DC 20233.  Count corrections for geography at the
census tract/BNA level or below are available from Population Division,
Bureau of the Census, Washington, DC 20233.  When requesting these
corrections, please include the desired census tract/BNA, block group, or
block numbers.

USING THE FILE

File Segments

The file is segmented into 35 dBase III (.DBF) files, designated
STF300ss.DBF through STF334ss.DBF where ss is the two-character State
abbreviation.  The STF300 segment contains the full 67 field identifiction
section.  The identification field names are shown in the Data Dictionary
chapter of the technical documentation.  Segments STF301 through STF334
each contain eight identification fields repeated from the STF300 segment.
They are shown below.


Identification Fields Common To All Segments
 
SUMLEV      Summary Level
STATEFP     State (FIPS)
CNTY        County (FIPS)
COUSUBFP    County Subdivision (FIPS)
PLACEFP     Place (FIPS)
TRACTBNA    Census Tract/Block Numbering Area
BLCKGR      Block Group
LOGRECNU    Logical Record Number

The segments are divided as shown below.

Data Tables In Each Segment
 
STF300   Field Identification Section
STF301   P1 - P13
STF302   P14A - P14C
STF303   P14D - P14F
STF304   P14G - P14I
STF305   P14J - P17
STF306   P18 - P26
STF307   P27 - P32
STF308   P33 - P36
STF309   P37 - P51
STF310   P52 - P60
STF311   P61 - P65
STF312   P66 - P70
STF313   P71 - P76
STF314   P77 - P83
STF315   P84 - P86
STF316   P87A
STF317   P87B
STF318   P87C
STF319   P87D
STF320   P87E
STF321   P88 - P107A
STF322   P108 - P118
STF323   P119 - P121
STF324   P122 - P123
STF325   P124A - P124B
STF326   P125 - P143
STF327   P144 - P170, H1 - H9
STF328   H10 - H21
STF329   H22 - H33
STF330   H34 - H44
STF331   H45 - H52A
STF332   H53 - H59
STF333   H60 - H81
STF334   H82 - H92


Field Names In Numeric Data Tables

Fields in numeric data tables are named according to a convention which
identifies the tables and the sequence of the data item within the table.
The 63 data items in P88, for example, are identified as P0880001 through
P0880063.  The one data item in table P107A is identified as P107A001.

Components Of The Field Name

Character 1    P or H
Character 2-4  Table number; right justified with leading zeroes
Character 5    Sub-table letter; zero if not applicable
Character 6-8  Item number; right justified with leading zeroes

Record Identification

Each record on a summary tape file is uniquely identified by a combination
of geographic (for example, State, county, and county subdivision), summary
level, and geographic component codes.  For example, if you have a Maryland
STF 3A file and want to look at the summary record for Prince George's
County, three identification fields must be checked:  the summary level
code for county records (050), the total record for geographic components
(00), and the county code for Prince George's County (033).  If all three
fields are not checked, multiple records will be found.  See the Summary
Level Sequence Charts and Geographic Area Component Codes section below for
information on identifying summary level and geographic component codes.

SUMMARY LEVEL SEQUENCE CHARTS AND GEOGRAPHIC AREA COMPONENT CODES

The Summary Level Sequence Charts chapter and the geographic area component
codes provide important information for using the 1990 census summary tape
files.

The Summary Level Sequence Charts chapter for STF 3 files identifies the
geographic levels for which data are provided.  It is easy to determine
this if you remember that the last geographic area type listed in the se-
quence identifies the geography of the summary level; the prior codes
simply define the hierarchy. For example, in summary level 140, the
hierarchy listed is State-county-census tract/block numbering area (BNA). The record actually contains data for a census tract/BNA within a given county and State.

When reading the Summary Level Sequence Charts chapter, it is important to
recognize that dashes (  ) separate the individual hierarchies while
slashes (/) separate different types of geography within the same 
hierarchy.

After identifying the summary level code, turn to chart 1 at the end of
this chapter to determine the geographic area codes and area
characteristics provided on CD-ROM for this summary level.  Remember that
an asterisk (*) indicates a code in that field.  The code may be one of the
standard codes described below.

The Summary Level Sequence Charts chapter also provides geographic
component code information.  This code identifies the various geographic
components for which the record is repeated within the summary level.
These component codes are provided in the data dictionary beginning in
position 14.  For example, the Summary Level Sequence Chart for STF 3A
indicates that the summary level for State records (040) has geographic
component codes 00, 40, 42, 43, and 44.  By turning to the geographic
component variable in the data dictionary, you can determine that the
tables for summary level 040 (State) are available for total geography
(State) (geographic component=00), American Indian reservation and trust
land (geographic component=40), tribal jurisdiction statistical area
(geographic component=42), tribal designated statistical area (geographic
component=43), and Alaska Native village statistical area (Alaska only)
(geographic component=44).

In short, always check the geographic codes, the summary level (beginning
in position 11 of the data dictionary), and the geographic component code
(beginning in position 14 of the data dictionary) for complete
identification of an STF 3 record.

SPECIAL AREA CODES

Special area codes appear in the geographic area codes portion of the data
dictionary (positions 142-171) on all STF's.  The codes represented may 
vary across STF's.  In STF 3 CD-ROM files special area code (1), and 
special area code (9) are used.  The codes are described below. Special 
area code (9) is used in all summary levels except 800, 810, and 820.

In STF 3B files only, special area code 1 is used.  It contains the 5-digit 
ZIP Code.
  
Special area code (9)   Land/water area
 
     1  Significant land, significant (0.0005 or more square kilometers) 
         water
     2  Significant land, minimal (less than 0.0005 square kilometer) water
     3  Significant land, zero (0) water
     4  Minimal land, significant water
     5  Minimal land, minimal water
     6  Minimal land, zero water
     7  Zero land, significant water
     8  Zero land, minimal water
     9  Zero land, zero water

STANDARD CODES

In the identification section of all STF's, there are standard codes,
undefined in the data dictionary, that have identical meaning regardless of
the field.  The codes are the same size as the field; that is, a three-
character field will have three symbols. These standard codes are listed
below.

  !    Not available--The code would be shown except it had not been
       determined when the files were prepared (for example, metropolitan
       area code on a county summary level (050) on STF 1A).

  9    Not in--This indicates a "remainder of" an area, such as a place
       code in the portion  of a county subdivision not in a place, or the
       summary level is not part of any area to which the code field
       applies, such as a summary level which is not in an Alaska Native
       Regional Corporation.

  Blank   Not applicable--This indicates that the code is not applicable to
          the summary level.

Where these codes are specifically defined in the data dictionary, the
defined code should be used. For example, in the division code description
on the data dictionary (position 89), the code for the Pacific Division is
indicated as "9."  This "9" should be interpreted as the division code,
not as "not in," the standard code for "9."


Chart 1.  STF 3 File Identification by Summary Level(1)


                             Summary level  Summary level  Summary level
Field name                   010  020  030  040  050  060  061  062  070

Record Codes

File Identification           *    *    *    *    *    *    *    *    *
State/US-Abbreviation         *    *    *    *    *    *    *    *    *
Summary Level                 *    *    *    *    *    *    *    *    *
Geographic Component          *    *    *    *    *    *    *    *    *

Characteristic Iteration      *    *    *    *    *    *    *    *    *
Logical Record Number         *    *    *    *    *    *    *    *    *
Logical Record Part Number    *    *    *    *    *    *    *    *    *
Total Number of Parts In
  Record                      *    *    *    *    *    *    *    *    *


Geographic Area Codes

Alaska Native Regional Corporation
American Indian/Alaska Native Area (Census)
American Indian/Alaska Native Area (FIPS)
American Indian/Alaska Native Area Class Code

American Indian Reservation Trust Land Indicator
Block
Block Group
Census Tract/Block Numbering Area

Congressional District
Consolidated City (Census)                                            *
Consolidated City (FIPS)                                              *
Consolidated City Class Code                                          *

Consolidated City Size Code                                           *
Consolidated Metropolitan
 Statistical Area                                 *    *    *    *    *
County                                            *    *    *    *    *
County Size Code                                  *    *    *    *    *

County Subdivision (Census)                            *    *    *    *
County Subdivision (FIPS)                              *    *    *    *
County Subdivision Class Code                          *    *    *    *
County Subdivision Size Code                           *    *    *    *

Division                           *         *    *    *    *    *    *
Extended City Indicator                                               *
Internal Use Code
Metropolitan Statistical Area/Consolidated
   Metropolitan Statistical Area                  *    *    *    *    *

MSA/CMSA Size Code                                *    *    *    *    *
Place (Census)                                                        *
Place (FIPS)                                                          *
Place Class Code                                                      *

Place Description Code                                                *
Place Size Code                                                       *
Primary Metropolitan Statistical
  Area                                            *    *    *    *    *
Region                             *    *    *    *    *    *    *    *

State (Census)                               *    *    *    *    *    *
State (FIPS)                                 *    *    *    *    *    *
Urban/Rural
Urbanized Area
Urbanized Area Size Code

Special Area Code (1)
Special Area Code (2)
Special Area Code (3)
Special Area Code (4)
Special Area Code (5)

Special Area Code (6)
Special Area Code (7)
Special Area Code (8)
Special Area Code (9)         *    *    *    *    *    *    *    *    *
Special Area Code (10)


Area Characteristics

Area (Land)                   *    *    *    *    *    *    *    *    *
Area (Water)                  *    *    *    *    *    *    *    *    *
Area Name/PSAD Term/Part
 Indicator                    *    *    *    *    *    *    *    *    *
Functional Status Code        *    *    *    *    *    *    *    *    *

Geographic Change User Note
 Indicator                    *    *    *    *    *    *    *    *    *
Housing Unit Count
 (100 percent)                *    *    *    *    *    *    *    *    *
Internal Point (Latitude)     *    *    *    *    *    *    *    *    *
Internal Point (Longitude)    *    *    *    *    *    *    *    *    *

Part Flag                                                             *
Political/Statistical Area
 Description Code                  *    *    *    *    *    *    *    *
Population Count
 (100 percent)                *    *    *    *    *    *    *    *    *
Special Flag                  *    *    *    *    *    *    *    *    *



(1) See the Summary Level Sequence Charts chapter for identification of the
    summary level record numbers.



Summary level  Summary level  Summary level  Summary level
080  090  140  150  155  160  161  170  200  201  202  203 Field name

                                                           Record Codes

 *    *    *    *    *    *    *    *    *    *    *    *  File Identification
 *    *    *    *    *    *    *    *    *    *    *    *  State/US-Abbreviation
 *    *    *    *    *    *    *    *    *    *    *    *  Summary Level
 *    *    *    *    *    *    *    *    *    *    *    *  Geographic Component

 *    *    *    *    *    *    *    *    *    *    *    *  Characteristic
                                                            Iteration
 *    *    *    *    *    *    *    *    *    *    *    *  Logical Record Number
 *    *    *    *    *    *    *    *    *    *    *    *  Logical Record
                                                            Part Number
 *    *    *    *    *    *    *    *    *    *    *    *  Total Number of
                                                            Parts In Record


                                                           Geographic Area Codes

      *                                                 *  Alaska Native
                                                            Regional Corporation
      *                                  *    *    *    *  American Indian/Alaska
                                                            Native Area (Census)
      *                                                    American Indian/Alaska
                                                            Native Area (FIPS)
      *                                                    American Indian/Alaska
                                                            Native Area Class Code

      *                                       *    *    *  American Indian
                                                            Reservation Trust
                                                            Land Indicator
                                                           Block
      *         *                                          Block Group
 *    *    *    *                                          Census Tract/Block
                                                            Numbering Area

      *                                                    Congressional
                                                            District
 *    *              *    *    *    *                      Consolidated
                                                            City (Census)
 *    *              *    *    *    *                      Consolidated
                                                            City (FIPS)
 *    *              *    *    *    *                      Consolidated
                                                            City Class Code

 *    *              *    *    *    *                      Consolidated
                                                            City Size Code
 *    *    *    *                   *                      Consolidated Metro-
                                                            politan Statistical
                                                            Area
 *    *    *    *    *              *                      County
 *    *    *    *    *              *                      County Size Code

 *    *                                                    County Sub-
                                                            division (Census)
 *    *                                                    County Sub-
                                                            division (FIPS)
 *    *                                                    County Sub-
                                                            division Class Code
 *    *                                                    County Sub-
                                                            division Size Code

 *    *    *    *    *    *    *    *                      Division
 *    *              *    *    *                           Extended City
                                                            Indicator
                                                          Internal Use Code
                                                          Metropolitan
                                                           Statistical Area/
                                                           Consolidated
 *    *    *    *                   *                      Metropolitan
                                                           Statistical Area

 *    *    *    *                   *                      MSA/CMSA Size Code
 *    *              *    *    *                           Place (Census)
 *    *              *    *    *                           Place (FIPS)
 *    *              *    *    *                           Place Class Code

 *    *              *    *    *                           Place
                                                            Description Code
 *    *              *    *    *                           Place Size Code
 *    *    *    *                   *                      Primary Metropolitan
                                                            Statistical Area
 *    *    *    *    *    *    *    *                      Region

 *    *    *    *    *    *    *    *                      State (Census)
 *    *    *    *    *    *    *    *                      State (FIPS)
      *                                                    Urban/Rural
      *                                                    Urbanized Area
      *                                                    Urbanized Area
                                                            Size Code

                                                           Special Area
                                                            Code (1)
                                                           Special Area
                                                            Code (2)
                                                           Special Area
                                                            Code (3)
                                                           Special Area
                                                            Code (4)
                                                           Special Area
                                                            Code (5)

                                                           Special Area
                                                            Code (6)
                                                           Special Area
                                                            Code (7)
                                                           Special Area
                                                            Code (8)
 *    *    *    *    *    *    *    *    *    *    *    *  Special Area
                                                            Code (9)
                                                           Special Area
                                                            Code (10)


                                                           Area Characteristics

 *    *    *    *    *    *    *    *    *    *    *    *  Area (Land)
 *    *    *    *    *    *    *    *    *    *    *    *  Area (Water)
 *    *    *    *    *    *    *    *    *    *    *    *  Area Name/PSAD
                                                            Term/Part Indicator
 *    *    *    *    *    *    *    *    *    *    *    *  Functional
                                                            Status Code

                     *    *    *    *    *    *         *  Geographic Change
                                                            User Note Indicator
 *    *    *    *    *    *    *    *    *    *    *    *  Housing Unit
                                                            Count (100 percent)
 *    *    *    *    *    *    *    *    *    *    *    *  Internal Point
                                                            (Latitude)
 *    *    *    *    *    *    *    *    *    *    *    *  Internal Point
                                                            (Longitude)

 *    *                                                    Part Flag
                     *    *    *    *    *    *    *    *  Political/Statistical
                                                             Area Description
                                                             Code
 *    *    *    *    *    *    *    *    *    *    *    *  Population Count
                                                            (100 percent)
 *    *    *    *    *    *    *    *    *    *    *    *  Special Flag




                             Summary level  Summary level  Summary level
Field name                   204  205  206  207  208  210  211  212  215

Record Codes

File Identification           *    *    *    *    *    *    *    *    *
State/US-Abbreviation         *    *    *    *    *    *    *    *    *
Summary Level                 *    *    *    *    *    *    *    *    *
Geographic Component          *    *    *    *    *    *    *    *    *

Characteristic Iteration      *    *    *    *    *    *    *    *    *
Logical Record Number         *    *    *    *    *    *    *    *    *
Logical Record Part Number    *    *    *    *    *    *    *    *    *
Total Number of Parts In
 Record                       *    *    *    *    *    *    *    *    *


Geographic Area Codes

Alaska Native Regional
 Corporation                                 *                        *
American Indian/Alaska
 Native Area (Census)         *    *    *    *    *    *    *    *    *
American Indian/Alaska
 Native Area (FIPS)                *    *    *    *    *    *    *    *
American Indian/Alaska
 Native Area Class Code            *    *    *    *    *    *    *    *

American Indian Reservation
 Trust Land Indicator         *    *    *    *    *         *    *    *
Block
Block Group
Census Tract/Block Numbering Area

Congressional District
Consolidated City (Census)
Consolidated City (FIPS)
Consolidated City Class Code

Consolidated City Size Code
Consolidated Metropolitan Statistical Area

County
County Size Code

County Subdivision (Census)
County Subdivision (FIPS)
County Subdivision Class Code
County Subdivision Size Code

Division                           *    *    *    *    *    *    *    *
Extended City Indicator
Internal Use Code
Metropolitan Statistical
 Area/Consolidated
 Metropolitan Statistical Area

MSA/CMSA Size Code
Place (Census)
Place (FIPS)
Place Class Code

Place Description Code
Place Size Code
Primary Metropolitan Statistical Area

Region                             *    *    *    *    *    *    *    *

State (Census)                     *    *    *    *    *    *    *    *
State (FIPS)                       *    *    *    *    *    *    *    *
Urban/Rural
Urbanized Area
Urbanized Area Size Code

Special Area Code (1)
Special Area Code (2)
Special Area Code (3)
Special Area Code (4)
Special Area Code (5)

Special Area Code (6)
Special Area Code (7)
Special Area Code (8)
Special Area Code (9)         *    *    *    *    *    *    *    *    *
Special Area Code (10)


Area Characteristics

Area (Land)                   *    *    *    *    *    *    *    *    *
Area (Water)                  *    *    *    *    *    *    *    *    *
Area Name/PSAD Term/Part
 Indicator                    *    *    *    *    *    *    *    *    *
Functional Status Code        *    *    *    *    *    *    *    *    *

Geographic Change User Note
 Indicator                    *    *         *    *    *    *         *
Housing Unit Count
 (100 percent)                *    *    *    *    *    *    *    *    *
Internal Point (Latitude)     *    *    *    *    *    *    *    *    *
Internal Point (Longitude)    *    *    *    *    *    *    *    *    *

Part Flag                          *    *    *    *    *    *    *    *
Political/Statistical Area
 Description Code             *    *    *    *    *    *    *    *    *
Population Count
 (100 percent)                *    *    *    *    *    *    *    *    *
Special Flag                  *    *    *    *    *    *    *    *    *



(1) See the Summary Level Sequence Charts chapter for identification of the
    summary level record numbers.




Summary level  Summary level  Summary level  Summary level
216  220  221  230  300  301  310  311  319  321  329  331 Field name

                                                           Record Codes

 *    *    *    *    *    *    *    *    *    *    *    *  File Identification
 *    *    *    *    *    *    *    *    *    *    *    *  State/US-Abbreviation
 *    *    *    *    *    *    *    *    *    *    *    *  Summary Level
 *    *    *    *    *    *    *    *    *    *    *    *  Geographic Component

 *    *    *    *    *    *    *    *    *    *    *    *  Characteristic Iteration
 *    *    *    *    *    *    *    *    *    *    *    *  Logical Record Number
 *    *    *    *    *    *    *    *    *    *    *    *  Logical Record Part Number
 *    *    *    *    *    *    *    *    *    *    *    *  Total Number of Parts In Record


                                                           Geographic Area Codes

                *                                          Alaska Native
                                                            Regional Corporation
 *    *    *                                               American Indian/
                                                            Alaska Native Area
                                                            (Census)
 *    *    *                                               American Indian/
                                                            Alaska Native Area
                                                            (FIPS)
 *    *    *                                               American Indian/
                                                            Alaska Native Area
                                                            Class Code

 *    *    *                                               American Indian
                                                            Reservation Trust
                                                            Land Indicator
                                                           Block
                                                           Block Group
                                                           Census Tract/Block
                                                            Numbering Area

                                                           Congressional District
                                                           Consolidated City
                                                            (Census)
                                                           Consolidated City
                                                            (FIPS)
                                                           Consolidated City
                                                            Class Code

                                                           Consolidated City
                                                            Size Code
                     *    *    *    *    *    *         *  Consolidated Metro-
                                                            politan Statistical
                                                            Area
      *    *                                       *    *  County
      *    *                                       *    *  County Size Code

                                                           County Subdivision
                                                            (Census)
                                                           County Subdivision
                                                            (FIPS)
                                                           County Subdivision
                                                            Class Code
                                                           County Subdivision
                                                            Size Code

 *    *    *    *              *    *    *    *    *    *  Division
                                                           Extended City
                                                            Indicator
                                                           Internal Use Code
                                                           Metropolitan
                                                            Statistical Area/
                                                            Consolidated
                     *    *    *    *    *    *    *    *   Metropolitan
                                                             Statistical Area

                     *    *    *    *    *    *    *    *  MSA/CMSA Size Code
                                                           Place (Census)
                                                           Place (FIPS)
                                                           Place Class Code

                                                           Place Description Code
                                                           Place Size Code
                          *         *         *         *  Primary Metro-
                                                            politan Statistical
                                                            Area
 *    *    *    *              *    *    *    *    *    *  Region

 *    *    *    *              *    *    *    *    *    *  State (Census)
 *    *    *    *              *    *    *    *    *    *  State (FIPS)
                                                           Urban/Rural
                                                           Urbanized Area
                                                           Urbanized Area
                                                            Size Code

                                                           Special Area
                                                            Code (1)
                                                           Special Area
                                                            Code (2)
                                                           Special Area
                                                           Code (3)
                                                           Special Area
                                                            Code (4)
                                                           Special Area
                                                            Code (5)

                                                           Special Area
                                                            Code (6)
                                                           Special Area
                                                            Code (7)
                                                           Special Area
                                                            Code (8)
 *    *    *    *    *    *    *    *    *    *    *    *  Special Area
                                                            Code (9)
                                                           Special Area
                                                            Code (10)

                                                          Area Characteristics

 *    *    *    *    *    *    *    *    *    *    *    *  Area (Land)
 *    *    *    *    *    *    *    *    *    *    *    *  Area (Water)
 *    *    *    *    *    *    *    *    *    *    *    *  Area Name/PSAD
                                                            Term/Part Indicator
 *    *    *         *    *    *    *    *    *    *    *  Functional
                                                            Status Code

 *    *         *    *    *    *    *    *    *    *    *  Geographic Change
                                                            User Note Indicator
 *    *    *    *    *    *    *    *    *    *    *    *  Housing Unit Count
                                                            (100 percent)
 *    *    *    *    *    *    *    *    *    *    *    *  Internal Point
                                                            (Latitude)
 *    *    *    *    *    *    *    *    *    *    *    *  Internal Point
                                                            (Longitude)

 *    *    *    *              *    *    *    *    *    *  Part Flag
 *    *    *    *    *    *    *    *    *    *    *    *  Political/Stati
                                                            stical Area
                                                            Description Code
 *    *    *    *    *    *    *    *    *    *    *    *  Population Count
                                                            (100 percent)
 *    *    *    *    *    *    *    *    *    *    *    *  Special Flag



                             Summary level  Summary level  Summary level
Field name                   340  341  400  410  420  430  440  450  460

Record Codes

File Identification           *    *    *    *    *    *    *    *    *
State/US-Abbreviation         *    *    *    *    *    *    *    *    *
Summary Level                 *    *    *    *    *    *    *    *    *
Geographic Component          *    *    *    *    *    *    *    *    *

Characteristic Iteration      *    *    *    *    *    *    *    *    *
Logical Record Number         *    *    *    *    *    *    *    *    *
Logical Record Part Number    *    *    *    *    *    *    *    *    *
Total Number of Parts In
 Record                       *    *    *    *    *    *    *    *    *

Geographic Area Codes

Alaska Native Regional Corporation

American Indian/Alaska Native
 Area (Census)

American Indian/Alaska
 Native Area (FIPS)

American Indian/Alaska
 Native Area Class Code

American Indian Reservation
 Trust Land Indicator

Block
Block Group
Census Tract/Block Numbering Area

Congressional District
Consolidated City (Census)    *    *                             *    *
Consolidated City (FIPS)      *    *                             *    *
Consolidated City Class Code  *    *                             *    *

Consolidated City Size Code   *    *                             *    *
Consolidated Metropolitan
 Statistical Area                  *                   *    *    *
County                                                 *    *    *

County Size Code                                       *    *    *

County Subdivision (Census)                                 *    *
County Subdivision (FIPS)                                   *    *
County Subdivision Class Code                               *    *
County Subdivision Size Code                                *    *

Division                      *    *         *    *    *    *    *    *
Extended City Indicator       *    *                             *    *
Internal Use Code
Metropolitan Statistical Area/
 Consolidated Metropolitan
 Statistical Area             *    *                   *    *    *

MSA/CMSA Size Code            *    *                   *    *    *
Place (Census)                *    *                             *    *
Place (FIPS)                  *    *                             *    *
Place Class Code              *    *                             *    *

Place Description Code        *    *                             *    *
Place Size Code               *    *                             *    *
Primary Metropolitan
 Statistical Area                  *                   *    *    *
Region                        *    *         *    *    *    *    *    *

State (Census)                *    *         *    *    *    *    *    *
State (FIPS)                  *    *         *    *    *    *    *    *
Urban/Rural                             *    *    *    *    *    *    *
Urbanized Area                          *    *    *    *    *    *    *
Urbanized Area Size Code                *    *    *    *    *    *    *

Special Area Code (1)
Special Area Code (2)
Special Area Code (3)
Special Area Code (4)
Special Area Code (5)

Special Area Code (6)
Special Area Code (7)
Special Area Code (8)
Special Area Code (9)         *    *    *    *    *    *    *    *    *
Special Area Code (10)


Area Characteristics

Area (Land)                   *    *    *    *    *    *    *    *    *
Area (Water)                  *    *    *    *    *    *    *    *    *
Area Name/PSAD Term/Part
 Indicator                    *    *    *    *    *    *    *    *    *
Functional Status Code        *    *    *    *    *    *    *    *    *

Geographic Change User Note
 Indicator                    *    *         *         *    *    *    *
Housing Unit Count
 (100 percent)                *    *    *    *    *    *    *    *    *
Internal Point (Latitude)     *    *    *    *    *    *    *    *    *
Internal Point (Longitude)    *    *    *    *    *    *    *    *    *

Part Flag                     *    *         *    *    *    *    *    *
Political/Statistical Area
 Description Code             *    *    *    *    *    *    *    *    *
Population Count
 (100 percent)                *    *    *    *    *    *    *    *    *
Special Flag                  *    *    *    *    *    *    *    *    *


(1) See the Summary Level Sequence Charts chapter for identification of the
    summary level record numbers.




Summary level  Summary level  Summary level  Summary level
501  510  520  530  540  550  551  552  560  800  810  820  Field Name

                                                           Record Codes

 *    *    *    *    *    *    *    *    *    *    *    *  File Identification
 *    *    *    *    *    *    *    *    *    *    *    *  State/US-
                                                            Abbreviation
 *    *    *    *    *    *    *    *    *    *    *    *  Summary Level
 *    *    *    *    *    *    *    *    *    *    *    *  Geographic Component

 *    *    *    *    *    *    *    *    *    *    *    *  Characteristic
                                                            Iteration
 *    *    *    *    *    *    *    *    *    *    *    *  Logical Record
                                                            Number
 *    *    *    *    *    *    *    *    *    *    *    *  Logical Record
                                                            Part Number
 *    *    *    *    *    *    *    *    *    *    *    *  Total Number of
                                                            Parts In Record

                                                           Geographic Area Codes

                                         *                 Alaska Native
                                                           Regional Corporation
                          *    *    *                      American Indian/
                                                            Alaska Native Area
                                                            (Census)
                          *    *    *                      American Indian/
                                                            Alaska Native Area
                                                            (FIPS)
                          *    *    *                      American Indian/
                                                            Alaska Native Area
                                                            Class Code

                               *    *                      American Indian
                                                            Reservation Trust
                                                            Land Indicator
                                                           Block
                                                           Block Group
                                                           Census Tract/Block
                                                           Numbering Area

 *    *    *    *    *    *    *    *    *                 Congressional
                                                            District
                *    *                                     Consolidated City
                                                            (Census)
                *    *                                     Consolidated City
                                                            (FIPS)
                *    *                                     Consolidated City
                                                            Class Code

                *    *                                     Consolidated City
                                                            Size Code
      *    *                                            *  Consolidated Metro-
                                                            politan Statistical
                                                            Area
      *    *                                            *  County
      *    *                                            *  County Size Code

           *                                               County Sub-
                                                            division (Census)
           *                                               County Sub-
                                                            division (FIPS)
           *                                               County Sub-
                                                            division Class Code
           *                                               County Sub-
                                                            division Size Code

 *    *    *    *    *    *    *    *    *         *    *  Division
                *                                          Extended City
                                                            Indicator
                                                           Internal Use Code
                                                           Metropolitan
                                                            Statistical Area/
                                                            Consolidated
      *    *                                            *   Metropolitan
                                                            Statistical Area

      *    *                                            *  MSA/CMSA Size Code
                *                                          Place (Census)
                *                                          Place (FIPS)
                *                                          Place Class Code

                *                                          Place
                                                           Description Code
                *                                          Place Size Code
      *    *                                            *  Primary Metro-
                                                            politan Statistical
                                                            Area
 *    *    *    *    *    *    *    *    *         *    *  Region

 *    *    *    *    *    *    *    *    *         *    *  State (Census)
 *    *    *    *    *    *    *    *    *         *    *  State (FIPS)
                                                           Urban/Rural
                                                           Urbanized Area
                                                           Urbanized Area
                                                           Size Code

                                              *    *    *  Special Area
                                                            Code (1)
                                                           Special Area
                                                            Code (2)
                                                           Special Area
                                                            Code (3)
                                                           Special Area
                                                            Code (4)
                                                           Special Area
                                                            Code (5)

                                                           Special Area
                                                            Code (6)
 *    *    *    *    *    *    *    *    *                 Special Area
                                                            Code (7)
                                                           Special Area
                                                            Code (8)
 *    *    *    *    *    *    *    *    *                 Special Area
                                                            Code (9)
                                                           Special Area
                                                            Code (10)

                                                           Area Characteristics

 *    *    *    *    *    *    *    *    *                 Area (Land)
 *    *    *    *    *    *    *    *    *                 Area (Water)
 *    *    *    *    *    *    *    *    *    *    *    *  Area Name/PSAD
                                                            Term/Part Indicator
 *    *    *    *    *    *    *    *    *         *    *  Functional
                                                            Status Code

      *    *    *    *    *    *    *    *                 Geographic Change
                                                           User Note Indicator
 *    *    *    *    *    *    *    *    *    *    *    *  Housing Unit Count
                                                            (100 percent)
 *    *    *    *    *    *    *    *    *                 Internal Point
                                                            (Latitude)
 *    *    *    *    *    *    *    *    *                 Internal Point
                                                            (Longitude)

      *    *    *    *    *    *    *    *         *    *  Part Flag
      *    *    *    *    *    *    *    *              *  Political/Stati-
                                                            stical Area
                                                            Description Code
 *    *    *    *    *    *    *    *    *    *    *    *  Population Count
                                                            (100 percent)
 *    *    *    *    *    *    *    *    *    *    *    *  Special Flag