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 93447 Paso Robles San Luis Obispo County 805, 820
CA 93448 Pismo Beach San Luis Obispo County 805
CA 93449 Pismo Beach San Luis Obispo County 805, 820
CA 93450 San Ardo Monterey County 805, 820, 831
CA 93451 San Miguel San Luis Obispo County 559, 805, 820
CA 93452 San Simeon San Luis Obispo County 805, 820
CA 93453 Santa Margarita San Luis Obispo County 805, 820
CA 93454 Santa Maria Santa Barbara County 805, 820
CA 93455 Santa Maria Santa Barbara County 805, 820
CA 93456 Santa Maria Santa Barbara 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.