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

Massachusetts ZIP Codes

Complete postal directory, details, and geographic map for the State of Massachusetts.

State ZIP Code City County Area Codes
MA 02038 Franklin Norfolk County 508, 774
MA 02040 Greenbush Plymouth County 339
MA 02041 Green Harbor Plymouth County 339, 781
MA 02043 Hingham Plymouth County 339, 781
MA 02044 Hingham Plymouth County 339
MA 02045 Hull Plymouth County 339, 617, 781, 857
MA 02047 Humarock Plymouth County 339, 781
MA 02048 Mansfield Bristol County 508, 774
MA 02050 Marshfield Plymouth County 339, 781
MA 02051 Marshfield Hills Plymouth County 339, 781
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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.