Lake County, California ZIP codes
15 ZIP codes are in Lake County, plus 1 that cross in from neighboring counties. It's part of the Clearlake, CA micro area.
- ZIP codes
- 15
- Population in these ZIPs
- 68,152
- Avg. median income
- $62,700population-weighted
- Cities & towns
- 15
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Lake County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 95422 | Clearlake | 17,054 | $42,241 | $202,400 |
| 95423 | Clearlake Oaks | 3,513 | $41,143 | $251,200 |
| 95424 PO Box | Clearlake Park | — | — | $258,400 |
| 95426 | Cobb | 1,257 | $84,000 | $283,500 |
| 95435 | Finley | 0 | — | — |
| 95443 | Glenhaven | 81 | — | $278,000 |
| 95451 | Kelseyville | 12,592 | $62,568 | $347,100 |
| 95453 | Lakeport | 11,741 | $71,419 | $353,900 |
| 95457 | Lower Lake | 3,122 | $63,594 | $366,300 |
| 95458 | Lucerne | 3,638 | $57,674 | $234,000 |
| 95461 | Middletown | 3,422 | $78,667 | $313,400 |
| 95464 | Nice | 2,484 | $61,705 | $221,700 |
| 95467 | Hidden Valley Lake | 5,778 | $84,152 | $363,400 |
| 95485 | Upper Lake | 3,242 | $104,667 | $308,800 |
| 95493 | Witter Springs | 228 | $74,531 | $625,000 |
ZIP codes partly in Lake County
These ZIP codes are mostly in a neighboring county but cover part of Lake County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 95469 | Potter Valley | Mendocino County | 1,315 | $82,683 | $402,300 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Lake County
Nearby counties
Frequently asked questions
How many ZIP codes are in Lake County, California?
15 ZIP codes are mainly in Lake County, and 1 more ZIP codes from neighboring areas reach partly into it.
What cities are in Lake County?
ZIP codes in Lake County use the city names Clearlake, Clearlake Oaks, Clearlake Park, Cobb, Finley, Glenhaven, Hidden Valley Lake, Kelseyville, Lakeport, Lower Lake, Lucerne and Middletown and others.
What metro area is Lake County in?
Lake County is part of the Clearlake, CA micropolitan statistical area.