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U.S. ZIP Codes Database 2026

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Klamath County ZIP Codes

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

County State ZIP Code City Area Codes
Klamath County OR 97626 Fort Klamath 458, 541
Klamath County OR 97627 Keno 458, 530, 541
Klamath County OR 97632 Malin 458, 530, 541
Klamath County OR 97633 Merrill 458, 530, 541
Klamath County OR 97634 Midland 458, 541
Klamath County OR 97639 Sprague River 458, 541
Klamath County OR 97731 Chemult 458, 541
Klamath County OR 97733 Crescent 458, 541
Klamath County OR 97737 Gilchrist 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.