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 95979 Stonyford Colusa County 530, 707
CA 95980 Storrie Plumas County 530
CA 95981 Strawberry Valley Plumas County 530
CA 95982 Sutter Sutter County 530
CA 95983 Taylorsville Plumas County 530
CA 95984 Twain Plumas County 530
CA 95986 Washington Nevada County 530
CA 95987 Williams Colusa County 530, 707
CA 95988 Willows Glenn County 530
CA 95991 Yuba City 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.