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 93436 Lompoc Santa Barbara County 805, 820
CA 93437 Lompoc Santa Barbara County 805, 820
CA 93438 Lompoc Santa Barbara County 805
CA 93440 Los Alamos Santa Barbara County 805, 820
CA 93441 Los Olivos Santa Barbara County 805, 820
CA 93442 Morro Bay San Luis Obispo County 805, 820
CA 93443 Morro Bay San Luis Obispo County 805
CA 93444 Nipomo San Luis Obispo County 805, 820
CA 93445 Oceano San Luis Obispo County 805, 820
CA 93446 Paso Robles San Luis Obispo County 805, 820
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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.