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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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Trinity County ZIP Codes

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

County State ZIP Code City Area Codes
Trinity County CA 95527 Burnt Ranch 530, 707
Trinity County CA 95552 Mad River 530, 707
Trinity County CA 95563 Salyer 530, 707
Trinity County CA 95595 Zenia 530, 707
Trinity County CA 96010 Big Bar 530, 707
Trinity County CA 96024 Douglas City 530
Trinity County CA 96041 Hayfork 530, 707
Trinity County CA 96046 Hyampom 530, 707
Trinity County CA 96048 Junction City 530
Trinity County CA 96052 Lewiston 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.