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U.S. ZIP Codes Database 2026

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Amador County ZIP Codes

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

County State ZIP Code City Area Codes
Amador County CA 95601 Amador City 209, 350
Amador County CA 95629 Fiddletown 209, 350, 530
Amador County CA 95640 Ione 209, 279, 350, 916
Amador County CA 95642 Jackson 209, 350
Amador County CA 95654 Martell 209
Amador County CA 95665 Pine Grove 209, 350
Amador County CA 95666 Pioneer 209, 350, 530
Amador County CA 95669 Plymouth 209, 279, 350, 530, 916
Amador County CA 95675 River Pines 209, 350, 530
Amador County CA 95685 Sutter Creek 209, 350
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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.