Where can I get block group level estimates for the American Community Survey (ACS)?
Starting with the 2009-2013 American Community Survey (ACS) 5-year data release, block group estimates are available in American FactFinder. All years of block group level estimates are also available in the ACS Summary File 5-year datasets. Learn more about the ACS Summary File on the ACS website. Block group data is not available in the ACS 1-year or 3-year datasets.