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  2. Public Use Microdata Area - Wikipedia

    en.wikipedia.org/wiki/Public_Use_Microdata_Area

    As of 2022, based on the results of the 2020 Census, there are 2,487 PUMAs. PUMAs allow the Census to publish census data for sub-state areas throughout every state. For example, the ACS publishes detailed data every year, but due to their sampling procedure only publishes data for census area that have more than 65,000 People.

  3. Topologically Integrated Geographic Encoding and Referencing

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

    This mismatch was not possible when the census TIGER files were available in ASCII format that was topological unlike shapefiles. The Census Bureau has made the data available through WMS servers. [4] The data forms a base for OpenStreetMap in the US, and also was used for the initial import of US map data into the Waze navigation system.

  4. Libre Map Project - Wikipedia

    en.wikipedia.org/wiki/Libre_Map_Project

    The Libre Map Project was started by Jared Benedict and around 100 additional individuals contributing money to purchase (or "liberate") a full set of 1:24K scale USGS topographic maps in Digital raster graphic form. [1] The map files were then hosted by archive.org to ensure the map data will continue to be freely available to everyone ...

  5. Wikipedia : WikiProject Maps/Source materials

    en.wikipedia.org/wiki/Wikipedia:WikiProject_Maps/...

    Every USGS topographic map available for free download from the Internet Archive. OpenStreetMap - CC-BY-SA 2.0 vector map data collected by GPS; The Map Library - Maps for Central America and Africa. Tag with commons:Template:PD-MapLibrary (talk, backlinks, edit) GinkgoMaps - Free Digital Maps published under the CC-by Licence

  6. File:Us counties from census bureau.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Us_counties_from...

    This image or file is a work of a United States Census Bureau employee, taken or made as part of that person's official duties. As a work of the U.S. federal government , the image is in the public domain .

  7. Mean center of the United States population - Wikipedia

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

    Map showing changes to the mean center of population for the United States, 1790–2020 (US Census Bureau) [1] Map of the Position of the U.S. Geographic Center of Area, Mean Center of Population, and Median Center of Population, 2020 (U.S. Census Bureau) [2] The center of the US population, 13th census (1910), near Bloomington, Indiana The center of the US population, 13th census (1910), near ...

  8. 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.

  9. List of United States urban areas - Wikipedia

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

    This is a list of urban areas in the United States as defined by the United States Census Bureau, ordered according to their 2020 census populations. An urban area is defined by the Census Bureau as a contiguous set of census blocks that are "densely developed residential, commercial, and other nonresidential areas".