Decennial Census (also known as the Census of Population and Housing)
- Conducted every 10 years beginning in 1790.
- From the 20th century it provides demographic and socio-economic statistics for population areas down to the block and neighborhood level.
American Community Survey (ACS)
- Replaces the long form (sample questionnaire) of the decennial census from 2010.
- Collects statistics on detailed demographic and socio-economic characteristics.
- Statistics are available for some geographic areas from the ACS beginnning in 2001.
See what statistics are available in each year with this list of items on the 1790-2010 Census of Population and Housing schedules (PDF)
****Block and block group data and 295 detailed tables from ACS 5 year estimates prior to the 2009-2013 estimates are not available on Factfinder. They must be downloaded from the ACS web site. (The ACS 2009-2013 5 year data are available on FactFinder at the block group level.)
- Use the Summary File Tool (an Excel file with macro) to view the downloaded files as spreadsheets instead of text files.
- MSU affiliates can access ACS block group data and the 295 detailed tables through Social Explorer.