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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.

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Barnstable County ZIP Codes

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

County State ZIP Code City Area Codes
Barnstable County MA 02655 Osterville 508, 774
Barnstable County MA 02657 Provincetown 508, 774
Barnstable County MA 02659 South Chatham 508, 774
Barnstable County MA 02660 South Dennis 508, 774
Barnstable County MA 02661 South Harwich 508
Barnstable County MA 02662 South Orleans 508
Barnstable County MA 02663 South Wellfleet 508, 774
Barnstable County MA 02664 South Yarmouth 508, 774
Barnstable County MA 02666 Truro 508, 774
Barnstable County MA 02667 Wellfleet 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.