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  2. Census tract - Wikipedia

    en.wikipedia.org/wiki/Census_tract

    For the 1980 Census, criteria for BNAs were changed to make them more comparable in size and shape to census tracts. For the 1990 Census, all counties contained either census tracts or BNAs. Census 2000 was the first decade in which census tracts were defined in all counties. In addition, the Census Bureau increased the number of geographic ...

  3. Census block - Wikipedia

    en.wikipedia.org/wiki/Census_block

    A census block is the smallest geographic unit used by the United States Census Bureau for tabulation of 100-percent data (data collected from all houses, rather than a sample of houses). The number of blocks in the United States , including Puerto Rico and other island areas, for the 2020 Census was 8,180,866.

  4. Metropolitan statistical area - Wikipedia

    en.wikipedia.org/wiki/Metropolitan_statistical_area

    The MSA population as of July 1, 2023, as estimated by the United States Census Bureau [15] The MSA population as of April 1, 2020, as enumerated by the 2020 United States census [15] [a] The percent MSA population change from April 1, 2020, to July 1, 2023 [15] The combined statistical area (CSA) [17] if it is designated and the MSA is a ...

  5. List of United States cities by population - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States...

    The city rank by population as of July 1, 2023, as estimated by the United States Census Bureau [1] The city name [1] The name of the state in which the city lies [1] The city population as of July 1, 2023, as estimated by the United States Census Bureau [1] The city population as of April 1, 2020, as enumerated by the 2020 United States census [1]

  6. Core-based statistical area - Wikipedia

    en.wikipedia.org/wiki/Core-based_statistical_area

    It contains a large population nucleus, or urban area, and adjacent communities that have a high degree of integration with that nucleus. [1] On July 15, 2015, the OMB released new standards based on the 2010 census. [2] [3] [4] These standards are used to replace the definitions of metropolitan areas from the 2010 United States census data.

  7. Statistical area (United States) - Wikipedia

    en.wikipedia.org/wiki/Statistical_area_(United...

    The United States federal government defines and delineates the nation's metropolitan areas for statistical purposes, using a set of standard statistical area definitions. As of 2023, the U.S. Office of Management and Budget (OMB) defined and delineated 393 metropolitan statistical areas (MSAs) and 542 micropolitan statistical areas (μSAs) in the United States and Puerto Rico. [1]

  8. Mean center of the United States population - Wikipedia

    en.wikipedia.org/wiki/Mean_center_of_the_United...

    The center of population is the point at which an imaginary, weightless, rigid, and flat (no elevation effects) surface representation of the 50 states (or 48 conterminous states for calculations made prior to 1960) and the District of Columbia would balance if weights of identical size were placed on it so that each weight represented the ...

  9. Census block group - Wikipedia

    en.wikipedia.org/wiki/Census_block_group

    A Census Block Group is a geographical unit used by the United States Census Bureau which is between the Census Tract and the Census Block. It is the smallest geographical unit for which the bureau publishes sample data, i.e. data which is only collected from a fraction of all households. Typically, Block Groups have a population of 600 to ...