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 03805 Newington Rockingham County 603
NH 03809 Alton Belknap County 603
NH 03810 Alton Bay Belknap County 603
NH 03811 Atkinson Rockingham County 603
NH 03812 Bartlett Carroll County 603
NH 03813 Center Conway Carroll County 207, 603
NH 03814 Center Ossipee Carroll County 603
NH 03815 Center Strafford Strafford County 603
NH 03816 Center Tuftonboro Carroll County 603
NH 03817 Chocorua Carroll 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.