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U.S. ZIP Codes Database 2026

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Baker County ZIP Codes

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

County State ZIP Code City Area Codes
Baker County OR 97840 Oxbow 208, 458, 541, 986
Baker County OR 97870 Richland 208, 458, 541, 986
Baker County OR 97877 Sumpter 458, 541
Baker County OR 97884 Unity 458, 541
Baker County OR 97905 Durkee 458, 541
Baker County OR 97907 Huntington 208, 458, 541, 986
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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.