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 01342 Deerfield Franklin County 413
MA 01343 Drury Berkshire County 413
MA 01344 Erving Franklin County 351, 413, 978
MA 01346 Heath Franklin County 413
MA 01347 Lake Pleasant Franklin County 413
MA 01349 Millers Falls Franklin County 351, 413, 978
MA 01350 Monroe Bridge Franklin County 413, 802
MA 01351 Montague Franklin County 351, 413, 978
MA 01354 Gill Franklin County 413
MA 01355 New Salem Franklin County 351, 413, 978
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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.