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 02456 New Town Middlesex County 617
MA 02457 Babson Park Norfolk County 339, 781
MA 02458 Newton Middlesex County 617, 857
MA 02459 Newton Center Middlesex County 339, 617, 781, 857
MA 02460 Newtonville Middlesex County 617, 857
MA 02461 Newton Highlands Middlesex County 339, 617, 781, 857
MA 02462 Newton Lower Falls Middlesex County 339, 617, 781, 857
MA 02464 Newton Upper Falls Middlesex County 339, 617, 781, 857
MA 02465 West Newton Middlesex County 339, 617, 781, 857
MA 02466 Auburndale Middlesex 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.