U.S. postal lookup

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.

42,735 verified records
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California ZIP Codes

Complete postal directory, details, and geographic map for the State of California.

State ZIP Code City County Area Codes
CA 95633 Garden Valley El Dorado County 530
CA 95634 Georgetown El Dorado County 530
CA 95635 Greenwood El Dorado County 530
CA 95636 Grizzly Flats El Dorado County 530
CA 95637 Guinda Yolo County 530, 707
CA 95638 Herald Sacramento County 209, 279, 350, 916
CA 95639 Hood Sacramento County 279, 916
CA 95640 Ione Amador County 209, 279, 350, 916
CA 95641 Isleton Sacramento County 209, 279, 350, 707, 916
CA 95642 Jackson Amador County 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.