Block Groups for the 2020 Census-Final Criteria

Block groups are statistical geographic subdivisions of a census tract defined for the tabulation and presentation of data from the decennial census and selected other statistical programs. Block groups also will be used to tabulate and publish estimates from the American Community Survey (ACS) after 2020 and potentially data from other Bureau of the Census (Census Bureau) censuses and surveys. The Census Bureau is publishing this notice in the Federal Register to announce final criteria for defining block groups for the 2020 Census Participant Statistical Areas Program (PSAP). In addition to block groups, the program also encompasses the review and update of census tracts, census designated places, and census county divisions.