U.S. Census Bureau

Income and Poverty Estimates
Guidance on When to Use ACS or CPS

 

When should you use income and poverty estimates from the American Community Survey (ACS) and the Current Population Survey (CPS)?

United States - Use the CPS
For national figures, we recommend using data from the CPS — the source of the official national estimates of poverty as designated by the Office of Management and Budget. It is also the source for widely used estimates of income.

States - Use the ACS
To compare states with each other, we recommend using the ACS. The CPS has value as a means of examining historical trends by state. Some of the differences between the two sources of data (CPS and ACS) are the length and detail of questions, sample size, geography and reference period.

Local Areas - Use the ACS
ACS single-year estimates are available for nearly 7,000 areas, including all congressional districts, and counties, cities and American Indian and Alaska Native areas of 65,000 population or more.

Examples of when to use CPS and ACS
Area Comparison CPS ACS
United States X  
State X
use for historical trend analysis
X
United States with state   X
United States with
state/metropolitan
area/county/place
  X
State with metropolitan
area/county/place
  X
American Indian and Alaska Native areas   X
Congressional districts   X
Metropolitan area with
county/place
  X
County with place   X
Places (cities)   X