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.

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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 95226 Campo Seco Calaveras County 209, 350
CA 95227 Clements San Joaquin County 209, 350
CA 95228 Copperopolis Calaveras County 209, 350
CA 95229 Douglas Flat Calaveras County 209
CA 95230 Farmington San Joaquin County 209, 350
CA 95231 French Camp San Joaquin County 209, 350
CA 95232 Glencoe Calaveras County 209, 350
CA 95233 Hathaway Pines Calaveras County 209, 350
CA 95234 Holt San Joaquin County 209
CA 95236 Linden San Joaquin 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.