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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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Lake County ZIP Codes

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

County State ZIP Code City Area Codes
Lake County CA 95461 Middletown 707
Lake County CA 95464 Nice 707
Lake County CA 95467 Hidden Valley Lake 707
Lake County CA 95485 Upper Lake 707
Lake County CA 95493 Witter Springs 707
Lake County CO 80429 Climax 719
Lake County CO 80461 Leadville 719, 970
Lake County CO 81251 Twin Lakes 719, 970
Lake County FL 32102 Astor 352, 386
Lake County FL 32158 Lady Lake 352
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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.