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
Maps and coordinates
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 95322 Gustine Merced County 209, 350
CA 95323 Hickman Stanislaus County 209, 350
CA 95324 Hilmar Merced County 209, 350
CA 95325 Hornitos Mariposa County 209, 350
CA 95326 Hughson Stanislaus County 209, 350
CA 95327 Jamestown Tuolumne County 209, 350
CA 95328 Keyes Stanislaus County 209, 350
CA 95329 La Grange Tuolumne County 209, 350
CA 95330 Lathrop San Joaquin County 209, 350
CA 95333 Le Grand Merced County 209, 350, 559
Page 210 of 266

Geographic Map of California

Postal context

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.