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 01867 Reading Middlesex County 339, 351, 781, 978
MA 01876 Tewksbury Middlesex County 351, 978
MA 01879 Tyngsboro Middlesex County 351, 603, 978
MA 01880 Wakefield Middlesex County 339, 781
MA 01885 West Boxford Essex County 351, 978
MA 01886 Westford Middlesex County 351, 978
MA 01887 Wilmington Middlesex County 339, 351, 781, 978
MA 01888 Woburn Middlesex County 339
MA 01889 North Reading Middlesex County 351
MA 01890 Winchester Middlesex County 339, 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.