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
All states and U.S. territories
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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 02216 Boston Suffolk County 617
MA 02217 Boston Suffolk County 617
MA 02222 Boston Suffolk County 857, 617, 781
MA 02228 East Boston Suffolk County 617
MA 02238 Cambridge Middlesex County 617
MA 02239 Cambridge Middlesex County 617
MA 02241 Boston Suffolk County 617
MA 02266 Boston Suffolk County 617
MA 02269 Quincy Norfolk County 617
MA 02283 Boston Suffolk County 617, 781, 978, 508, 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.