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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.

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San Luis Obispo County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in San Luis Obispo County.

County State ZIP Code City Area Codes
San Luis Obispo County CA 93442 Morro Bay 805, 820
San Luis Obispo County CA 93443 Morro Bay 805
San Luis Obispo County CA 93444 Nipomo 805, 820
San Luis Obispo County CA 93445 Oceano 805, 820
San Luis Obispo County CA 93446 Paso Robles 805, 820
San Luis Obispo County CA 93447 Paso Robles 805, 820
San Luis Obispo County CA 93448 Pismo Beach 805
San Luis Obispo County CA 93449 Pismo Beach 805, 820
San Luis Obispo County CA 93451 San Miguel 559, 805, 820
San Luis Obispo County CA 93452 San Simeon 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.