Sub-MCD A primary legal division of an MCD, found only in Puerto Rico. See also subbarrio.
Subreservation area (American Indian) See American Indian subreservation area.
Summary Tape File (STF) One of a series of computer files containing large amounts of decennial census data for the various levels of the Census Bureau’s geographic hierarchy. See also 100-percent data, sample data.
Supervisor’s district A nonfunctioning MCD found in Mississippi, used for the election of a member to the county board; in decennial censuses before 1990, the set of EDs for which one supervisor was responsible. The Census Bureau did not tabulate or publish data for supervisor’s districts.
Survey See sample survey.
Survey township See public land survey system, township (congressional or survey), township and range system.
Tabulation block All blocks for which the Census Bureau tabulates decennial census data, either an unsplit census block, or each portion of a decennial census collection block that was split into two or more separately identified parts to recognize any legal, administrative, or statistical boundaries that transect it. For the 1990 census, a tabulation block was identified by a three-digit number and, when it consisted of the portion of a collection block delimited by some other boundary, a one- or two-character alphabetic suffix; earlier decennial censuses did not identify these portions of split blocks with unique suffixes. See also census block, collection block, collection geography, tabulation geography.
Tabulation geography The geographic entities for which the Census Bureau tabulates and presents data, such as States, counties, places, census tracts, and census blocks.
