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New York Zip Codes



New York New York is a state in the Northeastern region of the United States. New York is the 27th most extensive, the 3rd most populous, and the 7th most densely populated of the 50 United States. New York is bordered by New Jersey and Pennsylvania to the south, and by Connecticut, Massachusetts and Vermont to the east. The state has a maritime border with Rhode Island east of Long Island, as well as an international border with the Canadian provinces of Ontario to the west and north, and Quebec to the north. The state of New York is often referred to as New York State to distinguish it from New York City.

New York City, with a population of over 8.1 million, is the most populous city in the United States. Alone, it makes up over 40 percent of the population of New York state. It is known for its status as a center for finance and culture and for its status as the largest gateway for immigration to the United States. According to the U.S. Department of Commerce, New York City is also a destination of choice for many foreign visitors. Both the state and city were named for the 17th century Duke of York, James Stuart, future James II and VII of England and Scotland.

State Zip Code City County Area Codes
NY 10541 Mahopac Putnam County 845, 914
NY 10542 Mahopac Falls Putnam County 845
NY 10543 Mamaroneck Westchester County 914
NY 10545 Maryknoll Westchester County 914
NY 10546 Millwood Westchester County 914
NY 10547 Mohegan Lake Westchester County 845, 914
NY 10548 Montrose Westchester County 914
NY 10549 Mount Kisco Westchester County 914
NY 10550 Mount Vernon Westchester County 347, 718, 914, 917, 929
NY 10551 Mount Vernon Westchester County 914
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Map of New York

ZIP codes are a system of postal codes used by the United States Postal Service (USPS) since 1963. The term ZIP, an acronym for Zone Improvement Plan, is properly written in capital letters and was chosen to suggest that the mail travels more efficiently, and therefore more quickly, when senders use the code in the postal address. The basic format consists of five decimal numerical digits. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the ZIP code, a hyphen, and four more digits that determine a more precise location than the ZIP code alone. The term ZIP code was originally registered as a servicemark (a type of trademark) by the U.S. Postal Service, but its registration has since expired.

ZIP codes designate only delivery points within the United States and its dependencies, as well as locations of its armed forces. There are no ZIP codes reserved for designating mail bound for foreign destinations (with the exception of U.S. military units stationed outside of the United States), and therefore, international outbound mail should not include a ZIP code in the delivery address. The last line of a foreign address must only show the name of the country of destination.

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