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
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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 03054 Merrimack Hillsborough County 603
NH 03055 Milford Hillsborough County 603
NH 03057 Mont Vernon Hillsborough County 603
NH 03060 Nashua Hillsborough County 351, 603, 978
NH 03061 Nashua Hillsborough County 603
NH 03062 Nashua Hillsborough County 351, 603, 978
NH 03063 Nashua Hillsborough County 603
NH 03064 Nashua Hillsborough County 603
NH 03070 New Boston Hillsborough County 603
NH 03071 New Ipswich Hillsborough County 351, 603, 978
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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.