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 01224 Berkshire Berkshire County 413
MA 01225 Cheshire Berkshire County 413
MA 01226 Dalton Berkshire County 413
MA 01227 Dalton Berkshire County 413
MA 01229 Glendale Berkshire County 413
MA 01230 Great Barrington Berkshire County 413, 518, 838
MA 01235 Hinsdale Berkshire County 413
MA 01236 Housatonic Berkshire County 413
MA 01237 Lanesborough Berkshire County 413, 518, 838
MA 01238 Lee Berkshire County 413
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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.