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A ZIP Code (an acronym for Zone Improvement Plan) 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 (zipping along) when senders use the code in the postal address. Introduced on July 1, 1963, the basic format comprised five digits.
A destination sectional center facility ( SCF) is a processing and distribution center (P&DC) of the United States Postal Service (USPS) that serves a designated geographical area defined by one or more three-digit ZIP Code prefixes. A sectional center facility routes mail between local post offices and to and from network distribution centers ...
^ For mail originating in ZIP Code Areas 006-009 and addressed to addresses in those ZIP Code Areas, the sectional center facility in San Juan, Puerto Rico serves as the NDC. List of international service centers. The United States Postal Service also has 5 international service centers (ISC) for distributing international mail:
Each cell in this table contains a three-digit ZIP code prefix, the state where that ZIP code prefix is located, and the name of the United States Postal Service (USPS) Sectional Center Facility (SCF) that serves that ZIP code prefix, which may be in a different state.
The full eagle logo, used in various versions from 1970 to 1993. The United States Postal Service (USPS), also known as the Post Office, U.S. Mail, or Postal Service, is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the United States, its insular areas, and its associated states.
ZCTAs are approximations of United States Postal Service (USPS) 5-digit ZIP Code service areas that the Census Bureau creates using census blocks to present statistical data from censuses and surveys. The ZCTA locale assignments are based on NCES locale boundaries and reflect the locale that accounts for the largest areal proportion of the ZCTA.
ZCTAs are generalized area representations of the United States Postal Service (USPS) ZIP code service areas, but are not the same as ZIP codes. 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 ...
ZCTA polygons and the extent of 2010 ZIP Code service areas is likely to be quite close, there may be differences between the two. Second, the geographic relationship between 2010 ZCTA boundaries and post-2010 USPS ZIP Code service areas may become less reliable over time if USPS adjusts the spatial extent of these areas to improve delivery ...
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