Lake County, California
County seat: Lakeport · Population 67,772 (2025) · 1,255 sq mi
Lake County is the 41st most populous of California's 58 counties, with 67,772 people (2025 estimate). Its county seat is Lakeport. The map shows its 2 cities and towns and the 6 neighboring counties.
Lake County facts
- County seat
- Lakeport
- Population (2025 estimate)
- 67,772 −0.6% since 2020
- Land area
- 1,255 sq mi 38th largest of 58
- Water area
- 73 sq mi
- Population density
- 54 per sq mi
- Established
- 1861
- Named after
- Clear Lake lake in California
- Largest city
- Clearlake 16,893
- Median household income
- $60,621
- Cities and towns
- 2 plus 13 CDPs
- ZIP codes
- 15
- Time zone
- Pacific
- FIPS code
- 06033
Cities and towns in Lake County
Lake County has 2 incorporated cities, towns and villages. Populations count the people living inside Lake County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Clearlake | City | 16,893 | |
| Lakeport (county seat) | City | 5,059 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Hidden Valley Lake | 5,872 | |
| Clearlake Riviera | 4,122 | |
| Kelseyville | 4,011 | |
| Lucerne | 3,435 | |
| North Lakeport | 2,995 | |
| Nice | 2,569 | |
| Clearlake Oaks | 2,198 | |
| Middletown | 1,572 | |
| Upper Lake | 1,374 | |
| Spring Valley | 853 | |
| Cobb | 842 | |
| Soda Bay | 802 | |
| Lower Lake | 635 |
ZIP codes in Lake County
15 ZIP codes reach into Lake County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 95422
- 95423
- 95426
- 95435
- 95443
- 95451
- 95453
- 95457
- 95458
- 95461
- 95464
- 95467
- 95469 also Mendocino County
- 95485
- 95493
Population of Lake County, 2020–2025
Lake County shrank by 390 people (−0.6%) between April 2020 and July 2025: 1,552 more deaths than births and a net gain of 1,228 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 68,208 |
| 2021 | 68,698 |
| 2022 | 68,271 |
| 2023 | 68,026 |
| 2024 | 67,880 |
| 2025 | 67,772 |
Neighboring counties
- Mendocino County northwest · 88,122 people
- Colusa County east · 21,836 people
- Napa County southeast · 132,949 people
- Glenn County northeast · 28,141 people
- Sonoma County south · 486,444 people
- Yolo County southeast · 224,410 people
Printable Lake County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (130 KB)
- PNG (2400 px) (100 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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