U.S. postal lookup

U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

42,735 verified records
All states and U.S. territories
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State directory

New Hampshire ZIP Codes

Complete postal directory, details, and geographic map for the State of New Hampshire.

State ZIP Code City County Area Codes
NH 03291 West Nottingham Rockingham County 603
NH 03293 Woodstock Grafton County 603
NH 03298 Tilton Belknap County 603
NH 03299 Tilton Belknap County 603
NH 03301 Concord Merrimack County 603
NH 03302 Concord Merrimack County 603
NH 03303 Concord Merrimack County 603
NH 03304 Bow Merrimack County 603
NH 03305 Concord Merrimack County 603
NH 03307 Loudon Merrimack County 603
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Geographic Map of New Hampshire

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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.