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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 difficulties in precisely ...
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 ...
Logo for the NHGIS. The National Historical Geographic Information System (NHGIS) is a historical GIS project to create and freely disseminate a database incorporating all available aggregate census information for the United States between 1790 and 2010. The project has created one of the largest collections in the world of statistical census ...
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 ...
US Census Bureau US basemaps and US demographic data: U.S. Gazetteer, TIGER/Line shapefiles, census data. National Historical Geographic Information System: 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)
April 1, 2030 ; 5 years' time(2030-04-01) Website. www.census.gov. The United States census (plural censuses or census) is a census that is legally mandated by the Constitution of the United States. It takes place every ten years. The first census after the American Revolution was taken in 1790 under Secretary of State Thomas Jefferson.
Shapefile Technical Description. The shapefile format is a geospatial vector data format for geographic information system (GIS) software. It is developed and regulated by Esri as a mostly open specification for data interoperability among Esri and other GIS software products. [ 1 ] The shapefile format can spatially describe vector features ...
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.