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 03842 Hampton Rockingham County 603
NH 03843 Hampton Rockingham County 603
NH 03844 Hampton Falls Rockingham County 603
NH 03845 Intervale Carroll County 603
NH 03846 Jackson Carroll County 603
NH 03847 Kearsarge Carroll County 603
NH 03848 Kingston Rockingham County 603
NH 03849 Madison Carroll County 603
NH 03850 Melvin Village Carroll County 603
NH 03851 Milton Strafford County 207, 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.