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  2. Census tract - Wikipedia

    en.wikipedia.org/wiki/Census_tract

    A census tract, census area, census district or meshblock[1] is a geographic region defined for the purpose of taking a census. [2] Sometimes these coincide with the limits of cities, towns or other administrative areas [2] and several tracts commonly exist within a county. In unincorporated areas of the United States these are often arbitrary ...

  3. ZIP Code Tabulation Area - Wikipedia

    en.wikipedia.org/wiki/ZIP_Code_Tabulation_Area

    ZIP Code Tabulation Area. ZIP Code Tabulation Areas (ZCTAs) are statistical entities developed by the United States Census Bureau for tabulating summary statistics. These were introduced with the Census 2000 and continued with the 2010 Census and 5 year American Community Survey [1] datasets. This new entity was developed to overcome the ...

  4. Topologically Integrated Geographic Encoding and Referencing

    en.wikipedia.org/wiki/Topologically_Integrated...

    Others are statistical areas, including Metropolitan Statistical Areas (MSA), census tracts, census block groups, and census blocks. ZIP Code Tabulation Areas (ZCTA) are quasi-statistical areas which attempt to approximate, but do not exactly match, the delivery areas of USPS ZIP codes. [1] ZIP codes are not truly areas, but rather a group of ...

  5. Census block - Wikipedia

    en.wikipedia.org/wiki/Census_block

    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, for the 2010 Census was 11,155,486. [ 1 ]

  6. Public Use Microdata Area - Wikipedia

    en.wikipedia.org/wiki/Public_Use_Microdata_Area

    A Public Use Microdata Area (PUMA) is a geographic unit used by the US Census for providing statistical and demographic information. Each PUMA contains at least 100,000 people. PUMAs do not overlap, and are contained within a single state. PUMAs were first created for the 1990 Census. [1]

  7. Core-based statistical area - Wikipedia

    en.wikipedia.org/wiki/Core-based_statistical_area

    An enlargeable map of the 124 combined statistical areas (CSAs) of the United States as of 2006. A core-based statistical area (CBSA) is a U.S. geographic area defined by the Office of Management and Budget (OMB). It contains a large population nucleus, or urban area, and adjacent communities that have a high degree of integration with that ...

  8. 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 ...

  9. List of United States urban areas - Wikipedia

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

    The list in this article includes urban areas with a population of at least 50,000, but urban areas may have as few as 5,000 residents or 2,000 housing units. Some cities may also be a part of two or more urban areas, as is the case for Huntsville, and the smaller Huntsville Southeast [2]. For the 2020 census, the Census Bureau redefined the ...