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1 = Delaware (DE), New York (NY), Pennsylvania (PA) 2 = District of Columbia (DC), Maryland (MD), North Carolina (NC), South Carolina (SC), Virginia (VA), West Virginia (WV).
What is zip code?
The United States Postal Service uses postal codes called ZIP codes. The fundamental format was unveiled on July 1st, 1963, and consisted of five digits. An expanded ZIP+4 code was introduced in 1983; it had the five-digit ZIP Code, a hyphen, and four more digits that indicated a more precise location.
1. A system of codes used as part of mailing addresses and assigned by the postal service; each code identifies a delivery area. 2. [often zip c-] A code number with five digits that is frequently increased to nine.
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