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Individual USPS ZIP codes can cross state, place, county, census tract, census block group and census block boundaries, so the Census Bureau asserts that "there is no correlation between ZIP codes and Census Bureau geography". [2] Moreover, the USPS frequently realigns, merges, or splits ZIP codes to meet changing needs.
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.
The following is a list of the highest-income ZCTAs in the United States. ZCTAs or ZIP Code Tabulation Areas are the census equivalent of ZIP codes used for statistical purposes. The reason why regular ZIP codes are not used is because they are defined by routes rather than geographic boundaries.
The codes were assigned by NIST and each uniquely identified a state, the District of Columbia, or an outlying area of the U.S. These codes were used by the U.S. Census Bureau, the Department of Agriculture to form milk-processing plant numbers, some cash registers during check approval, and in the Emergency Alert System (EAS).
Aleutians West Census Area [b] 02020 Anchorage, Municipality of [a] [c] 02050 Bethel Census Area [b] 02060 Bristol Bay Borough [a] 02063 Chugach Census Area [b] 02066 Copper River Census Area [b] 02068 Denali Borough [a] 02070 Dillingham Census Area [b] 02090 Fairbanks North Star Borough [a] 02100 Haines Borough [a] 02105 Hoonah–Angoon Census ...
Census tracts are used to establish RUCAs because they are the smallest geographic building block for which reliable commuting data are available. RUCA codes are updated every year and may be found on the website of the Economic Research Service (ERS) of the United States Department of Agriculture and the University of Washington.
Some of the geographic areas represented in TIGER are political areas, including state and federally recognized tribal lands, cities, counties, congressional districts, and school districts. Others are statistical areas, including Metropolitan Statistical Areas (MSA), census tracts, census block groups, and census blocks.
The United States Office of Management and Budget (OMB) has defined 925 core-based statistical areas (CBSAs) for the United States and 10 for Puerto Rico. [1] The OMB defines a core-based statistical area as one or more adjacent counties or county equivalents that have at least one urban core area of at least 10,000 population, plus adjacent territory that has a high degree of social and ...