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
Population
City
9542216,998Clearlake
9545112,957Kelseyville
9545311,254Lakeport
954675,795Hidden Valley Lake
954613,909Middletown
954233,322Clearlake Oaks
954583,303Lucerne
954573,252Lower Lake
954852,909Upper Lake
954642,466Nice
954261,178Cobb
95435347Finley
95443190Glenhaven
95493144Witter Springs

Zip Codes in Lake County, California by Population (2024)