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 01899 Andover Essex County 351
MA 01901 Lynn Essex County 339, 781
MA 01902 Lynn Essex County 339, 351, 781, 978
MA 01903 Lynn Essex County 339
MA 01904 Lynn Essex County 339, 351, 781, 978
MA 01905 Lynn Essex County 339, 781
MA 01906 Saugus Essex County 339, 781
MA 01907 Swampscott Essex County 339, 351, 781, 978
MA 01908 Nahant Essex County 339, 781
MA 01910 Lynn Essex County 339
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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.