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U.S. ZIP Codes Database 2026

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Siskiyou County ZIP Codes

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

County State ZIP Code City Area Codes
Siskiyou County CA 96039 Happy Camp 530
Siskiyou County CA 96044 Hornbrook 458, 530, 541
Siskiyou County CA 96049 Redding 530
Siskiyou County CA 96050 Klamath River 530
Siskiyou County CA 96057 Mccloud 530
Siskiyou County CA 96058 Macdoel 530
Siskiyou County CA 96064 Montague 458, 530, 541
Siskiyou County CA 96067 Mount Shasta 530
Siskiyou County CA 96085 Scott Bar 530
Siskiyou County CA 96086 Seiad Valley 458, 530, 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.