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 02019 Bellingham Norfolk County 401, 508, 774
MA 02020 Brant Rock Plymouth County 339, 781
MA 02021 Canton Norfolk County 339, 617, 781, 857
MA 02025 Cohasset Norfolk County 339, 781
MA 02026 Dedham Norfolk County 339, 617, 781, 857
MA 02027 Dedham Norfolk County 339
MA 02030 Dover Norfolk County 339, 508, 774, 781
MA 02031 East Mansfield Bristol County 508
MA 02032 East Walpole Norfolk County 339, 508, 774, 781
MA 02035 Foxboro Norfolk County 339, 508, 774, 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.