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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 97425 Crescent Lake 541
Klamath County OR 97601 Klamath Falls 458, 541
Klamath County OR 97602 Klamath Falls 541
Klamath County OR 97603 Klamath Falls 458, 530, 541
Klamath County OR 97604 Crater Lake 458, 541
Klamath County OR 97621 Beatty 458, 541
Klamath County OR 97622 Bly 458, 541
Klamath County OR 97623 Bonanza 458, 530, 541
Klamath County OR 97624 Chiloquin 458, 541
Klamath County OR 97625 Dairy 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.