14 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 95422 | Clearlake | 17,054 |
| 95451 | Kelseyville | 12,592 |
| 95453 | Lakeport | 11,741 |
| 95467 | Hidden Valley Lake | 5,778 |
| 95458 | Lucerne | 3,638 |
| 95423 | Clearlake Oaks | 3,513 |
| 95461 | Middletown | 3,422 |
| 95485 | Upper Lake | 3,242 |
| 95457 | Lower Lake | 3,122 |
| 95464 | Nice | 2,484 |
| 95426 | Cobb | 1,257 |
| 95493 | Witter Springs | 228 |
| 95443 | Glenhaven | 81 |
| 95435 | Finley | 0 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 14 ZCTAs in Lake County, California (US Census).