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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Massachusetts ZIP Codes

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

State ZIP Code City County Area Codes
MA 02140 Cambridge Middlesex County 339, 617, 781, 857
MA 02141 Cambridge Middlesex County 617, 857
MA 02142 Cambridge Middlesex County 617, 857
MA 02143 Somerville Middlesex County 617, 857
MA 02144 Somerville Middlesex County 339, 617, 781, 857
MA 02145 Somerville Middlesex County 339, 617, 781, 857
MA 02148 Malden Middlesex County 339, 617, 781, 857
MA 02149 Everett Middlesex County 339, 617, 781, 857
MA 02150 Chelsea Suffolk County 339, 617, 781, 857
MA 02151 Revere Suffolk County 339, 617, 781, 857
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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.