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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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Imperial County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Imperial County.

County State ZIP Code City Area Codes
Imperial County CA 92257 Niland 442, 760
Imperial County CA 92259 Ocotillo 442, 619, 760, 858
Imperial County CA 92266 Palo Verde 442, 760, 928
Imperial County CA 92273 Seeley 442, 760
Imperial County CA 92275 Salton City 442, 760
Imperial County CA 92281 Westmorland 442, 760
Imperial County CA 92283 Winterhaven 442, 760, 928
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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.