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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.
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. Typically, Block Groups have a population of 600 to 3,000 people. Every Census Block Group has a unique 12-digit FIPS code. The Block Group's unique identifier is the 12th digit of the FIPS Code.
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". [1]
The 2020 United States census was the 24th decennial United States census.Census Day, the reference day used for the census, was April 1, 2020.Other than a pilot study during the 2000 census, [1] this was the first U.S. census to offer options to respond online or by phone, in addition to the paper response form used for previous censuses.
Each ZCTA is constructed by aggregating the Census 2020 blocks whose addresses use a given ZIP code. In assembling census statistical units to create ZCTAs, the Census Bureau took the ZIP code used by the majority of addresses in each census unit at the time the data was compiled.
For the 1940 Census, the Census Bureau began publishing census block data for all cities with 50,000 or more people. Census block numbers were assigned, where possible, by census tract, but for those cities that had not yet delineated census tracts, ‘‘block areas’’ (called ‘‘block numbering areas’’ [BNAs] in later censuses) were ...
President Trump used executive privilege over internal Justice and Commerce Department documents detailing how a citizenship question was added to the 2020 census.
The Census Bureau provides guidance for data users about which data set to use when analyzing different population and geography sizes. [23] From 2007 to 2013, three-year estimates were available for areas with 20,000 people or more. This data product was discontinued in 2015 due to budget cuts. [24]