Contains worked examples and instructions to calculate margins of error for aggregated estimates, percentages, and ratios

Contains a list of tables and types of geographic areas that have variance replicate estimates

For all geographies except the tract and block group level, variance replicate estimate tables are named using the table ID. The tract and block group files are named by table ID + State FIPS code. All published ACS table IDs and table layouts may be found in the Table Shells. The 2-digit FIPS state code and the state name that corresponds to it may be found in the ANSI Codes for States​.