Data Sources and Software
Online Data Extraction
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American FactFinder
Choose between STF1 and STF3 for all levels of geography, is offered at this site. Multiple data tables for multiple locations at one
level of geography can be downloaded at one time.
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InfoShare Online
Access to STF1A, STF3A, and Public Use Microdata is available.
For STF files, a single data table for a multiple locations can
be downloaded. Locations include geographies unique to New
York City, like Community District. For Public Use
Microdata, you can cross tabulate two variables.
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Integrated Public Use Microdata Series (IPUMS)
At this site custom extractions of public use
microdata can be done. Coverage is for all census years
since 1850 except 1930.
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National Historical Geographic Information System (NHGIS)
Provides an online extraction tool for selected summary file variables
at the national, state, county, tract/block numbering area,
metropolitan area, and primary metropolitan area levels allowing for
multiple locations at one level of geography to be downloaded at
once.
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1990 Census Transportation Planning Package
This subject-specific special series in available from the Department
of Transportation.
GIS Products
CD-ROM Products in the EDS Collection
- Geolytics CD-ROM Products
These products come with easy-to-use software that
extract data for use in statistical packages, for making
thematic maps, or for importing in to GIS software.
It is available on the DSSC machines in Data Apps folder within the
Program Menu.
-CensusCD+Maps (data to the block group level, includes
ZIP codes)
-1990 Blocks (block level data)
-Neighborhood Change Database (1990 data using 2000
tract boundaries)
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CD-ROMs from the Federal Government
Refer to
1990 Census - CD-ROMs for a list of these CD-ROMs.
They include the Subject Summary Tape Files series that reported
on special topics and population sub-groups.
Files for FTP
- DataGate
Searching DataGate for EDS Study #1990 will return a list of all
holdings whether they are available for downloading from the Cunix
or in another format. Files for the local areas are stored on Cunix
along with SAS and SPSS program code for these files.
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ICPSR
This link leads to the complete list of what ICPSR provides.
Use this source if you do not find what you are looking
for in DataGate.
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Census Bureau FTP Site
This public site allows for downloading the STF1, STF3, and selected
data from STF4. The STF1 and STF3 files are derived from the CD-ROM
versions of these files that have a record structure different from
the original tape files.
An Overview of Data Products
Summary Tapes Files
Summary Tape Files report data tabulated to various geographic levels,
referred to on the files as "summary levels." The files are organized
based on their geographic coverage and on whether the data is derived from
the short form questionnaire that 100% of the population completed or the
long form questionnaire completed by a sample of the population. File STF1 is based
solely on the topics covered on the
short form, while STF3 and STF4 included topics from both the
long form and the short form.
STF1
A: States - Block Groups
B: Blocks
C: Nation-Counties
D: Congressional Districts
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STF3
A: States - Block Groups
B: Zip Codes
C: Nation-Counties
D - Congressional Districts
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STF4
Summary Tape File 4 reports the same topics as STF3 but, for it's cross
tabulations, uses detailed race and Hispanic categories rather than the
basic ones. STF4A covers States - Block Groups, and STF4C covers Nation -
to areas of 10,000 or more.
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Public Law (P.L.) 94-171
Also called the Redistricting file, it was the first file
published from the 1990 Census and was used for congressional
reapportionment. Data is based on the short form and focuses on age, sex,
race, and Hispanic origin.
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SSTF
Subject Summary Tape Files analyze a topic (like ancestry, education,
etc.) or population (blacks, asians, etc). Cross tabulations within these
files are reported at the national level only.
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- Public Use Microdata (PUMS)
The design of the 1990 PUMS files is similar to that of 2000 so refer to
Microdata Overview that the explanation while
relying on the links above to obtain the data.
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Maps and Spatial Data
- TIGER/Line®
All the geographies supported by the Census Bureau were originally
published in the TIGER Line Files product. These are the basis for the
spatial data products described above.
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Printed Maps
The Census Bureau distributed Census maps in print. EDS has the Tract
Boundary Maps and the Puma maps for 1990.
- Other Products
The Census Bureau publishes two special tabulations that it prepares
under contract for other agencies: Equal Employment Opportunity (EEO) File
and the Census Transportation Planning Package (CTTP) file.
General Information
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