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U.S. ZIP Codes Database 2026

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Coos County ZIP Codes

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

County State ZIP Code City Area Codes
Coos County NH 03590 North Stratford 603, 802
Coos County NH 03592 Pittsburg 207, 468, 603, 802, 819, 873
Coos County NH 03593 Randolph 603
Coos County NH 03595 Twin Mountain 603
Coos County NH 03597 West Stewartstown 603, 802
Coos County NH 03598 Whitefield 603, 802
Coos County OR 97407 Allegany 541
Coos County OR 97411 Bandon 458, 541
Coos County OR 97414 Broadbent 458, 541
Coos County OR 97420 Coos Bay 458, 541
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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.