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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California ZIP Codes

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

State ZIP Code City County Area Codes
CA 96097 Yreka Siskiyou County 530
CA 96099 Redding Shasta County 530
CA 96101 Alturas Modoc County 530
CA 96103 Blairsden Graeagle Plumas County 530
CA 96104 Cedarville Modoc County 530, 775
CA 96105 Chilcoot Plumas County 530, 775
CA 96106 Clio Plumas County 530
CA 96107 Coleville Mono County 530
CA 96108 Davis Creek Modoc County 458, 530, 541
CA 96109 Doyle Lassen County 530, 775
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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.