Census 2000: Data Products, Information and Activities
Note: To access any of the data referenced below (and some others not referenced here) using the MCDC's Uexplore/Dexter software go to
the Decennial Census 2000 section of the Uexplore directory page, where you will find links to the relevant data directories.
- Summary File 3
— SF3: This collection of summary files is
probably the most important and frequently used data product from the 2000 census. In keeping with its importance,
the MCDC has created a number of applications that permit relatively easy access to the data. This includes
an extensive collection of dynamically-generated Census 2000 demographic profiles (short reports for
long lists of geographic entities down to the block group, tract and ZIP code level), as well as a series of
very detailed demographic profiles (9 profile
reports and a total of 58 pages for each geographic area). See Demographic Profile Products
for additional information regarding the Profile series. If you just want to access the gist of the data available from these files using our Dexter software you should explore the SF3-based
sf32000x data directory ("filetype").
- SF3-Based Demographic Profiles: As they did
with Summary File 1, the Bureau released a set of Dempographic Profile products prior to the release of
the complete Summary File 3 products. These products were in the form of pdf documents readily accessible on the web, and as comma-delimited files that could
be downloaded and processed.
These are relatively small files (the full SF3 files are over 100 times as large), with less subject detail and
less geographic detail (only governmental units are reported -- no tracts,
ZCTAs, block groups, etc.)
- Summary File 1 —
SF1: Contains the most important, detailed and comprehensive data thus far available from the 2000 Census. The MCDC has created many value-added
reports based on these data. We have done custom aggregations of these files to get summaries for Missouri School Districts and State
Legislative Districts. We also have done comparison reports relating key indicators with comparable data from SF1 in 1990.Profile of General
Demographics Characteristics: 2000: — The Bureau released these special profile products in May, 2001 -- just ahead
of releasing the full SF1 files. They present good overviews, but are only available for governmental units. We have data for the entire United States here.
- Summary File 2 —
SF2: Important for those who are
interested in detailed complete count data for special race/hispanic/Indian
tribe population groups. Less important than in previous censuses
because so much of the data here was already released as part of SF1.
The special subgroups ("characteristic iterations") are
represented on separate observations, identified by the ID variable
CharIter. See our SAS
format code showing the values of these codes. See the Census
page for more information, including access to the data via American
- Summary File 4
— SF4: See the Census Bureau's Abstract for a description of this data collection. The key feature of "SF4" is the ability to get detailed tables for a long list of race/ancestry groups. However, new threshold limitations (explained in the Abstract) make using it for analytical purposes very problematic. The large number of tables combined with the large number of characteristic iterations makes these files huge.
The Missouri file was released to the public on May 7, 2003, and is now accessible here.
- Demographic Profile Products —
This page summarizes the collection of demographic profile products developed by the MCDC. It includes
a summary table
that describes each product type and provides links to main menus for actually accessing the profiles. All but one
of the profiles use data from the 2000 Census; the one exception is our profile product based on the 1990 census.
Several of the profile products are trend reports that include data from both the 1990 and 2000 censuses.
- Public User MicroSample (PUMS) —
These files are terrific if you
have good statistical software and know how to use it. With PUMS, you can build
tables any way you like it from these datasets which contain actual
microdata (census returns from individual persons and households). Geographic detail
is limited (to special geographic areas called PUMAs. The Census Bureau
releases these files in two product types, a 1% sample file and a 5% sample.
The MCDC collection includes a complete collection of 5% sample files for all states
and a smaller collection of the 1% sample files (Missouri, Illinois and Kansas). SAS
users at universities may contact the MCDC regarding being obtaining access to this collection
directly on the University of Missouri site using a special server.
- Public Law 94-171
— PL94171: The so-called "Redistricting" files were the first major data product based on the 2000 Census. Very limited
subject detail -- just enough to count the voters by race and ethnicity. The MCDC used these data to create a
number of basic population trend reports. The data were aggregated to many special Missouri geographies.
- Equal Employment Opportunity — EEO2000: This loosely affiliated collection of tables (datasets) is named for the Equal Employment Opportunity
Commission, 1 of 4 federal agencies that commissioned this special tabulation product. Here you will
find detailed counts of persons by occupation categories by age, sex, race/ethnicity, education level,
income level and even, sometimes,
by industry. Hard to describe since it is a very complicated collection of 24 tables, each with its own
geographic, demographic and occupational dimensions.
- 2000 County to County Workflow Reports are
available for all U.S. states and counties. See the following pdf documents on Counts of
Workers Commuting To and From Missouri Counties:
By Residence Geography and
By Work Geography.
To extract indicators, see Dexter/UExplore
[Summary Data Tables with Detailed Links. The workflow files show the number of residents in a given county work in
tracking commuting patterns, suburban change, and the radius area of a
town's employment and service area.
Additional information is available from the
— MIG2000: Datasets in this directory are related to migration in the U.S. between
1995 and 2000 as derived from the 2000 decennial census long form (sample) data. The Census Bureau is releasing
a number of different summary files in this category during the summer and fall of 2003. The first file
released contains basic counts of migration at the county level for the entire country. Lets you find out how
many people moved from County A to County B within the U.S. Unfortunately, the kind of demographic detail that
we had in earlier years describing the characteristics of movers will be severely cut back this decade because of
Bureau concerns about nondisclosure.