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U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

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Glenn County ZIP Codes

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

County State ZIP Code City Area Codes
Glenn County CA 95913 Artois 530
Glenn County CA 95920 Butte City 530
Glenn County CA 95939 Elk Creek 530, 707
Glenn County CA 95943 Glenn 530
Glenn County CA 95951 Hamilton City 530
Glenn County CA 95963 Orland 530
Glenn County CA 95988 Willows 530

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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.