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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 ...
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.
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.
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 information, much of ...
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. They were updated again for the 2020 census.
Or go to the Census Bureau's home page at and enter "2024 Census Survey " is the search field. The Census Bureau says it is conducting the 2024 Census Survey under the authority of Title 13, U.S ...
Kusilvak Census Area [b] 02164 Lake and Peninsula Borough [a] 02170 Matanuska-Susitna Borough [a] 02180 Nome Census Area [b] 02185 North Slope Borough [a] 02188 Northwest Arctic Borough [a] 02195 Petersburg Borough [a] [e] 02198 Prince of Wales – Hyder Census Area [b] 02220 Sitka, City and Borough of [a] [f] 02230 Skagway, Municipality of [a ...
RUCAs are a classification scheme that use the standard Census Bureau urban area definitions in combination with commuting information to characterize all of the nation's census tracts. Census tracts are used to establish RUCAs because they are the smallest geographic building block for which reliable commuting data are available.