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 01503 Berlin Worcester County 351, 508, 774, 978
MA 01504 Blackstone Worcester County 401, 508, 774
MA 01505 Boylston Worcester County 351, 508, 774, 978
MA 01506 Brookfield Worcester County 413, 508, 774
MA 01507 Charlton Worcester County 508, 774
MA 01508 Charlton City Worcester County 508, 774
MA 01509 Charlton Depot Worcester County 508, 774
MA 01510 Clinton Worcester County 351, 508, 774, 978
MA 01515 East Brookfield Worcester County 508, 774
MA 01516 Douglas Worcester County 401, 508, 774, 860, 959
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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.