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A ZIP Code (an acronym for Zone Improvement Plan [1]) is a system of postal codes used by the United States Postal Service (USPS). The term ZIP was chosen to suggest that the mail travels more efficiently and quickly [ 2 ] ( zipping along ) when senders use the code in the postal address .
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.
United States Minor Outlying Islands: UM: 96898 Mostly uninhabited. There is only one postal code in use, 96898 Wake Island. Uruguay: UY: NNNNN U.S. Virgin Islands: 1 July 1963 VI: NNNNN, NNNNN-NNNN U.S. ZIP codes. Range 00801–00851. Uzbekistan: 13 May 2005 UZ: NNNNNN [30] Vanuatu: VU: no codes Vatican: VA: 00120 Single code used for all ...
Modern two-letter abbreviated codes for the states and territories originated in October 1963, with the issuance of Publication 59: Abbreviations for Use with ZIP Code, three months after the Post Office introduced ZIP codes in July 1963.
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.
In the United States, the basic ZIP Code is composed of five numbers. The first three numbers identify a specific sectional center facility—or central sorting facility—that serves a geographic region (typically a large part of a state). The next two numbers identify a specific post office either serving an area of a city (if in an urban ...
The data below is for annual median household income in the 50 states, the District of Columbia, and Puerto Rico — the data is based on 2013–2017 American Community Survey data from the U.S. Census Bureau; populations are also from the 2013–2017 American Community Survey.
The FCC assigned additional numeric codes used with the EAS for territorial waters of the U.S., but these were not part of the FIPS standard. The FIPS state alpha code for each U.S. states and the District of Columbia are identical to the postal abbreviations by the United States Postal Service. From September 3, 1987, the same was true of the ...