Census 2000: Data Products, Information and Activities
To access any of the data referenced below using the MCDC's Uexplore/Dexter application, 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 the demographic profile products page 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.
- 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 Bureau's SF2 page for more information, including access to the data via American FactFinder.
- 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 describes each product type and provides links to main menus for 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 use 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).
- 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 is named for the Equal Employment Opportunity Commission, one of four 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. 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 Census Bureau.
- Migration (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.