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U.S. ZIP Codes Database 2026

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Malheur County ZIP Codes

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

County State ZIP Code City Area Codes
Malheur County OR 97901 Adrian 208, 458, 541, 986
Malheur County OR 97902 Arock 458, 541
Malheur County OR 97903 Brogan 458, 541
Malheur County OR 97906 Harper 458, 541
Malheur County OR 97908 Ironside 458, 541
Malheur County OR 97909 Jamieson 458, 541
Malheur County OR 97910 Jordan Valley 208, 458, 541, 986
Malheur County OR 97911 Juntura 458, 541
Malheur County OR 97913 Nyssa 208, 458, 541, 986
Malheur County OR 97914 Ontario 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.