Decennial Census technical support

1990 Census CD-ROM discs

dBase III Plus^™ file format

Windows XP update for DOS programs

A new DOS batch file named GOXP.bat has been added to all of the software updates on this page to enable the DOS program updates to run in Windows XP.

Census 1990 on-line gateway
Technical documentation
Contact your local State Data Center (SDC) for SAS ^™ (or other) code for use with 1990 census ASCII text data files.

Public Use Microdata Sample (PUMS)

User Guide (1990)

Equal Employment Opportunity

Download DOS software (networkable version)
Download information about accessing the data files on disc directly for analysis and further data processing.
On-line lookup

Summary Tape Files (STF)

Copies of most of the 1990 Summary Tape File CD-ROM discs are now available on-line. The data file format is dBase III Plus^™. DOS software is included for simple querying. The data files can also be accessed directly without using the available DOS software. Software and data file updates can be obtained from links in this section. When updating files, compare file creation dates.

Summary Tape File 1

Download STF1A DOS software (networkable version, browse error fixed)
Download STF1C DOS software
View CD-ROM disc file documentation

Summary Tape File 3

Usernote Using STF3 cd-rom data with a DBMS
Download CD-ROM technical documentation

Download STF3A Windows software
Download STF3A DOS software

[2.5f, Sep 1995] Fixes minor problem causing infrequent abnormal program termination.
[2.5e, May 1994] This version fixes a minor problem in creating profiles in a LAN environment.
[2.5d, Jan 1994] LAN version.
[2.5a, Jul 1993] Software recompiled with Clipper 5.2.
[2.4, Apr 1993] This version fixes a problem in the geographic names attached to MSA and UA records in output files. This was introduced in Version 2.0.
[2.0, Oct 1992] Software recompiled with Clipper 5. This version also provides the capability to copy data directly to a Lotus (WK1) spreadsheet.

Download STF3B DOS software (networkable version)

Please note that Summary Level (SUMLEV) code 800 and Geographic Component (GEOCOMP) code 00 identify whole ZIP codes in STF3B.

Download STF3C DOS software for disc 1 (networkable version)
Download STF3C DOS software for disc 2 (networkable version)

Subject Summary Tape Files (SSTF)

Download SSTF1 DOS software
Download SSTF2 DOS software (fixes copy whole matrix error)
Download SSTF17 DOS software (fixes a data display problem for PMSA areas within CMSA area)
Download DOS SSTF22 software

Ver 1.2x fixes the selection for the Precision Production Occupations. The files, OCC_DETL.DBF and OCC_DETL.NDX need to be located in the same directory as the executable, SSTF22.EXE.
Ver 1.1 fixes the display box for occupations five sub-catagories deep. The 5th catagory disappeared after displaying summary information.

Public Law 94-171 Redistricting Data Program

Official and Adjusted

On-line lookup
Download technical documentation (Adjusted) (Windows help file format) [903 KB, 1.78 MB]

1990 Census CD-ROM discs

dBase III Plus™ file format

dBase III Plus^™ file format