There are 14 zip codes in Lake County, California. The most populated is 95422, located in Clearlake. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
95422Clearlake16,998
95451Kelseyville12,957
95453Lakeport11,254
95467Hidden Valley Lake5,795
95461Middletown3,909
95423Clearlake Oaks3,322
95458Lucerne3,303
95457Lower Lake3,252
95485Upper Lake2,909
95464Nice2,466
95426Cobb1,178
95435Finley347
95443Glenhaven190
95493Witter Springs144

Lake County, California Zip Codes by Population (2024)