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.

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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 03756 Lebanon Grafton County 603
NH 03765 Haverhill Grafton County 603, 802
NH 03766 Lebanon Grafton County 603
NH 03768 Lyme Grafton County 603, 802
NH 03769 Lyme Center Grafton County 603
NH 03770 Meriden Sullivan County 603
NH 03771 Monroe Grafton County 603, 802
NH 03773 Newport Sullivan County 603
NH 03774 North Haverhill Grafton County 603, 802
NH 03777 Orford Grafton County 603, 802
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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.