Census of population and housing, 1980 [United States]

Description

Summary Tape File 1 consists of four sets of computer-readable data files containing detailed tabulations of the nation's population and housing characteristics produced from the 1980 Census. This series is comprised of Summary Tape File 1A (STF1A), Summary Tape File 1B (STF1B), Summary Tape File 1C (STF1C), and Summary Tape File 1D (STF1D). STF1A, STF1B, and STF1D have 52 separate files, one for each state, Puerto Rico, and the District of Columbia. STF1C consists of one nation-wide datafile containing information about all states. All files in the STF1 series are identical, containing 321 substantive data variables organized in the form of 59 ''tables,'' as well as standard geographic identification variables. All of the data items contained in all the STF 1 files were tabulated from the ''complete count'' or ''100%'' questions included on the 1980 Census questionnaire. All four groups of files within the STF1 series have identical record formats and technical characteristics and differ only in the types of geographical areas for which the summarized data items are presented. STF1A provides summaries for state or state equivalent, county or county equivalent, minor civil division/census county division (MCD/CCD), place or place segment within MCD/CCD or remainder of MCD/CCD, census tract of block numbering area (BNA) or untracted segment within place, place segment or remainder or MCD/CCD, block group (BG) or BG segment or enumeration district (ED).