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U.S. ZIP Codes Database 2026

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Grafton County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Grafton County.

County State ZIP Code City Area Codes
Grafton County NH 03766 Lebanon 603
Grafton County NH 03768 Lyme 603, 802
Grafton County NH 03769 Lyme Center 603
Grafton County NH 03771 Monroe 603, 802
Grafton County NH 03774 North Haverhill 603, 802
Grafton County NH 03777 Orford 603, 802
Grafton County NH 03779 Piermont 603, 802
Grafton County NH 03780 Pike 603
Grafton County NH 03784 West Lebanon 603, 802
Grafton County NH 03785 Woodsville 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.