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 01256 Savoy Berkshire County 413
MA 01257 Sheffield Berkshire County 413, 860, 959
MA 01258 South Egremont Berkshire County 413, 518, 838, 860, 959
MA 01259 Southfield Berkshire County 413, 860, 959
MA 01260 South Lee Berkshire County 413
MA 01262 Stockbridge Berkshire County 413
MA 01263 Stockbridge Berkshire County 413
MA 01264 Tyringham Berkshire County 413
MA 01266 West Stockbridge Berkshire County 413, 518, 838
MA 01267 Williamstown Berkshire County 413, 518, 838
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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.