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
All states and U.S. territories
Maps and coordinates
County directory

Dukes County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Dukes County.

County State ZIP Code City Area Codes
Dukes County MA 02535 Chilmark 508, 774
Dukes County MA 02539 Edgartown 508, 774
Dukes County MA 02552 Menemsha 508, 774
Dukes County MA 02557 Oak Bluffs 508, 774
Dukes County MA 02568 Vineyard Haven 508, 774
Dukes County MA 02573 West Chop 508, 774
Dukes County MA 02575 West Tisbury 508, 774
Dukes County MA 02713 Cuttyhunk 508, 774

Geographic Map of Dukes County

Postal context

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.