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 95656 Mount Aukum El Dorado County 530
CA 95658 Newcastle Placer County 279, 530, 916
CA 95659 Nicolaus Sutter County 279, 530, 916
CA 95660 North Highlands Sacramento County 279, 916
CA 95661 Roseville Placer County 279, 916
CA 95662 Orangevale Sacramento County 279, 916
CA 95663 Penryn Placer County 279, 916
CA 95664 Pilot Hill El Dorado County 279, 530, 916
CA 95665 Pine Grove Amador County 209, 350
CA 95666 Pioneer Amador County 209, 350, 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.