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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 02644 Forestdale 508, 774
Barnstable County MA 02645 Harwich 508, 774
Barnstable County MA 02646 Harwich Port 508, 774
Barnstable County MA 02647 Hyannis Port 508, 774
Barnstable County MA 02648 Marstons Mills 508, 774
Barnstable County MA 02649 Mashpee 508, 774
Barnstable County MA 02650 North Chatham 508, 774
Barnstable County MA 02651 North Eastham 508
Barnstable County MA 02652 North Truro 508, 774
Barnstable County MA 02653 Orleans 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.