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New Hampshire Zip Codes



New Hampshire New Hampshire is a state in the New England region of the northeastern United States of America. The state was named after the southern English county of Hampshire. It is bordered by Massachusetts to the south, Vermont to the west, Maine and the Atlantic Ocean to the east, and the Canadian province of Quebec to the north. New Hampshire is the 5th least extensive and the 9th least populous of the 50 U.S. states.

It became the first post-colonial sovereign nation in the Americas when it broke off from Great Britain in January 1776, and six months later was one of the original thirteen states that founded the United States of America. In June 1788, it became the ninth state to ratify the United States Constitution, bringing that document into effect. New Hampshire was the first U.S. state to have its own state constitution.

State Zip Code City County Area Codes
NH 03873 Sandown Rockingham County 603
NH 03874 Seabrook Rockingham County 351, 603, 978
NH 03875 Silver Lake Carroll County 603
NH 03878 Somersworth Strafford County 207, 603
NH 03882 Effingham Carroll County 207, 603
NH 03883 South Tamworth Carroll County 603
NH 03884 Strafford Strafford County 603
NH 03885 Stratham Rockingham County 603
NH 03886 Tamworth Carroll County 603
NH 03887 Union Strafford County 603
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Map of New Hampshire

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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