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  2. List of GIS data sources - Wikipedia

    en.wikipedia.org/wiki/List_of_GIS_data_sources

    NHGIS provides free of charge, aggregate census data and GIS-compatible boundary files for the United States between 1790 and 2012. Atlas of Historical County Boundaries Project (AHCBP) The AHCBP documents all boundary changes in states and counties in United States territory, including non-county areas never before compiled or mapped ...

  3. Topologically Integrated Geographic Encoding and Referencing

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

    The TIGER files do not contain the census demographic data, but merely the geospatial/map data. GIS can be used to merge census demographics or other data sources with the TIGER files to create maps and conduct analysis. TIGER data is available without cost because U.S. Government publications are required to be released into the public domain.

  4. Data USA - Wikipedia

    en.wikipedia.org/wiki/Data_USA

    Data USA is a free platform that allows users to collect, analyze, and visualize shared U.S. government data. Launched on April 4, 2016, Data USA is the product of an ongoing partnership between Deloitte , Massachusetts Institute of Technology (MIT) Collective Learning Group , and Datawheel.

  5. File:Public Roads of the contiguous United States, from the ...

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

    English: Every public road in the contiguous United States, based on the 2018 U.S. Census TIGER dataset, with no other underlying map features.The data can be retrieved from the U.S. Census Bureau website, and was rendered using QGIS on the Albers Equal-Area Projection.

  6. Historical geographic information system - Wikipedia

    en.wikipedia.org/wiki/Historical_geographic...

    HistoAtlas is an open historical geographical information system that tries to build a free historical atlas of the world. National Historical Geographic Information System (NHGIS) is a system for displaying and analyzing Census tracts and tract changes in the United States.

  7. OpenStreetMap - Wikipedia

    en.wikipedia.org/wiki/OpenStreetMap

    OpenStreetMap (abbreviated OSM) is a free, open map database updated and maintained by a community of volunteers via open collaboration. [4] Contributors collect data from surveys, trace from aerial photo imagery or satellite imagery, and import from other freely licensed geodata sources.

  8. Web GIS - Wikipedia

    en.wikipedia.org/wiki/Web_GIS

    The United States Census Department extensively uses Web GIS to distribute its boundary data, such as TIGER files, and demographics to the public. [ 1 ] [ 16 ] The "2020 Census Demographic Data Map Viewer" runs on an ESRI Web Map Application, and provides demographic information, such as population, race, and housing information at the state ...

  9. United States Census Bureau - Wikipedia

    en.wikipedia.org/wiki/United_States_Census_Bureau

    A social media video from the Census Bureau explaining how to use data.census.gov, an online platform that enables the public to search and use data from their Bureau's surveys. Throughout the decade between censuses, the bureau conducts surveys to produce a general view and comprehensive study of the United States' social and economic conditions.