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 01586 West Millbury Worcester County 508, 774
MA 01588 Whitinsville Worcester County 508, 774
MA 01590 Sutton Worcester County 508, 774
MA 01601 Worcester Worcester County 508
MA 01602 Worcester Worcester County 508, 774
MA 01603 Worcester Worcester County 508, 774
MA 01604 Worcester Worcester County 508, 774
MA 01605 Worcester Worcester County 508, 774
MA 01606 Worcester Worcester County 508, 774
MA 01607 Worcester Worcester County 508, 774
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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.