Focus on Long Form Data

Summary File 4 (SF 4) contains data compiled from a sample of approximately 19 million housing units (about 1 in 6 households) that received the Census 2000 Long-Form questionnaire (PDF - 627KB). It covers topics including income, ancestry, citizenship status, home values, commute time to work, occupation, education, veteran status, language ability, migration, place of birth, and many others.

There are 335 Detailed Tables available in the SF 4 data product. Quick Tables and Geographic Comparison Tables based on these Detailed Tables summarize the most popular results. A full description of all the tables in SF 4 can be found in the Help System or in the Summary File 4 Technical Documentation (PDF - 5.2MB).

SF 4 has 336 Race and Ancestry Groups

The SF 4 data product is primarily focused on examining the results by race and ethnicity. For each of the Detailed Tables, the results can be filtered to include only the population belonging to certain race and ethnic groups. These include the following:

• Total population
• 132 race groups
• 78 American Indian and Alaska Native tribes (reflecting 39 individual tribes)
• 39 Hispanic or Latino Groups
• 86 ancestry groups

For a complete list of the 336 population groups, see Appendix H of the SF 4 Technical Documentation.

SF 4 has Many Geographies

The SF 4 product contains data for many geographic levels. The smallest available is the census tract. The most commonly requested geographical levels for SF 4 include:

• Census Tract
• County
• Place & County Subdivision (City or Town)
• ZIP Code Tabulation Area
• Congressional District
• Tribal Reservation Area
• Metropolitan Statistical Area
• State
• Region
• Nation

Both Detailed Tables and Quick Tables (QT) provide total population figures and are available for the 336 population groups. Geographic Comparison Tables (GCT) provide total population figures and can be repeated for nine race and Hispanic and Latino groups. Detailed Tables offer the most comprehensive subject and geographic coverage.

Data Filtered to Protect Privacy and Confidentiality

Because many of the race and ancestry groups are small, the SF 4 results have been filtered to protect the confidentiality of the responses provided. There are two rules which apply to SF 4 tables:

• Tables for any population group excluded from SF 2 because the group's total population in a specific geographic area did not meet the threshold of 100 people are also excluded from SF 4.
• Tables in SF 4 shown for any of the population groups will only be shown if there are at least 50 unweighted sample cases in a specific geographic area. The same 50 unweighted sample cases also applied to ancestry iterations.

For quick access to results:

1. Select a table.
2. Select a geographic area from the drop-down menu.
3. Click 'Go'.
   
   The table will display for the total population. Use the links at the top of the page to select Race or Ethnic Groups and Ancestry Groups (Population Groups), other tables, and other geographic areas.

Tables

Profile of General Demographic Characteristics (DP-1) - United States or a state
Profile of Selected Social Characteristics (DP-2) - United States or a state
Profile of Selected Economic Characteristics (DP-3) - United States or a state
Profile of Selected Housing Characteristics (DP-4) - United States or a state
Financial Housing Characteristics (GCT-H9) - United States and states, or state and counties
Income and Poverty in 1999 (GCT-P14) - United States and states, or state and counties

Select a geographic area: United States Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware District of Columbia Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Puerto Rico Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming


Technical Note on Same-Sex Unmarried Partner Data from the 1990 and 2000 Censuses