Census of Population and Housing, 1980: Summary Tape File 2A

Summary Tape File 2 (STF 2) files contain detailed complete-count tabulations for all persons and housing units in the United States. The STF 2A files contain summaries for standard metropolitan statistical areas (SMSAs) and for these components: counties or county equivalents, places of 10,000 or more inhabitants, census tracts, and totals for census tracts split by county components. A summary is also provided for the tracted area outside of SMSAs within each state. The data are presented in two types of records, each containing different tables. The first, record A, is presented once for each geographic area and summarizes total population and all housing units. The second, record B, is presented for the total population in each area and repeated for each race and Hispanic group in the area that meets nonsuppression criteria. Record B is presented for a maximum of six racial/Hispanic groups. If too few persons or housing units fall into an ethnic category in a census area, the data for that category are suppressed. There are 51 files, one for each state and the District of Columbia.