Where can I find block group level estimates for the American Community Survey (ACS)?

In the American Community Survey (ACS), block groups are the lowest (smallest) level of geography published, and they are only available in the 5-year datasets. Block group data are not available in the ACS 1-year datasets. ACS block group estimates are available using a variety of tools, such as:

• data.census.gov: You can find all the available data products through data.census.gov. Data.census.gov is the primary data access tool for the ACS.
• Application Programming Interface (API): The API is a tool that programmers can use to access data more efficiently. Learn more about the API in our handbook Using the Census Data API with the ACS: What Data Users Need to Know.
• ACS Summary File: The ACS Summary File product contains the complete set of the Detailed Tables to allow users to import these data into databases, spreadsheets, SAS datasets, and other formats. Learn more about the Summary File in our handbook Using the American Community Survey Summary File: What Data Users Need to Know.