Lake County California is covered by a total of 18 ZIP Codes. There are 4 ZIP Codes in Lake County that extend into adjacent counties (Mendocino County, Napa County, and Sonoma County). Of the ZIP codes within or partially within Lake County there are 13 Standard ZIP Codes and 4 PO Box ZIP Codes.
Click on the ZIP Codes in the interactive map to view more information. The map control in the upper right corner can be used to toggle map layers on and off. The red outline is the border of Lake County and can be turned on and off. Each type of postal code can also be turned on and off.
| ZIP Code | ZIP Code City/Town | ZIP Code Type | |||
|---|---|---|---|---|---|
| Clearlake | Standard | |||
| Clearlake Oaks | Standard | |||
| Clearlake Park | PO Box | |||
| Cobb | PO Box | |||
| Finley | PO Box | |||
| Glenhaven | Standard | |||
| Healdsburg | Standard | |||
| Kelseyville | Standard | |||
| Lakeport | Standard | |||
| Lower Lake | Standard | |||
| Lucerne | Standard | |||
| Middletown | Standard | |||
| Nice | Standard | |||
| Hidden Valley Lake | Standard | |||
| Potter Valley | Standard | |||
| Talmage | PO Box | |||
| Upper Lake | Standard | |||
| Witter Springs | Standard |