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 93385 Bakersfield Kern County 661
CA 93386 Bakersfield Kern County 661
CA 93387 Bakersfield Kern County 661
CA 93388 Bakersfield Kern County 661
CA 93389 Bakersfield Kern County 661
CA 93390 Bakersfield Kern County 661
CA 93401 San Luis Obispo San Luis Obispo County 805, 820
CA 93402 Los Osos San Luis Obispo County 805, 820
CA 93403 San Luis Obispo San Luis Obispo County 805
CA 93405 San Luis Obispo San Luis Obispo County 805, 820
Page 126 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.