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 93424 Avila Beach San Luis Obispo County 805, 820
CA 93426 Bradley Monterey County 805, 820
CA 93427 Buellton Santa Barbara County 805, 820
CA 93428 Cambria San Luis Obispo County 805, 820
CA 93429 Casmalia Santa Barbara County 805, 820
CA 93430 Cayucos San Luis Obispo County 805, 820
CA 93432 Creston San Luis Obispo County 805, 820
CA 93433 Grover Beach San Luis Obispo County 805, 820
CA 93434 Guadalupe Santa Barbara County 805, 820
CA 93435 Harmony San Luis Obispo County 805
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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.