Home > Data Services > Catalog . Restricted Data . Census . ACS

Search Data Services

Meta Search
search across all the following databases:

Data Catalog
Data and documentation

KnowledgeBase
Common questions and answers.

Resources
Entire collection of data resources.


Latest Data News

RSS Feed icon

Breaking News: Protect the 2020 Census

The Fastest Growing US Cities Are Mostly In the West

Another rule from NIH: Demographers might get to ignore this one

Research on Health Disparities: Incarceration Matters

Changing Race From One Census to the Next

Data Services Knowledge Base

Q:  

I have some health areas that are defined on the basis of census tracts. When I try to get race-specific results using summary file data from the census (2000) using American FactFinder, I find that some of my census tracts are missing. I know these tracts exist. What is going on?

A:  

Summary File 4 (SF4) allows one to get race-specific results. There are 335 population groups in SF4 (132 race groups, 78 American Indian and Alaska Native tribe categories, 39 Hispanic and Latino groups, and 86 ancestry groups).

A population group will only be shown if there are at least 50 unweighted sample cases of that population group in the specific geographic area (census tract, county, etc.).

Depending on your measure of interest, there are some race-specific iterations in SF3 where this algorithm is not invoked. For instance, poverty status is iterated by race in SF3. However, the race groups only include the most common. If you want poverty status for non-Hispanic whites you can use SF3. If you want poverty status for non-Hispanic blacks, you have to use SF4.

Annotated Resources:

Direct Links:

Related Question Groups: