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
All states and U.S. territories
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State directory

California ZIP Codes

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

State ZIP Code City County Area Codes
CA 95947 Greenville Plumas County 530
CA 95948 Gridley Butte County 530
CA 95949 Grass Valley Nevada County 279, 530, 916
CA 95950 Grimes Colusa County 530
CA 95951 Hamilton City Glenn County 530
CA 95953 Live Oak Sutter County 530
CA 95954 Magalia Butte County 530
CA 95955 Maxwell Colusa County 530
CA 95956 Meadow Valley Plumas County 530
CA 95957 Meridian Sutter County 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.