Mendocino County, California
County seat: Ukiah · Population 88,122 (2025) · 3,507 sq mi
Mendocino County is the 39th most populous of California's 58 counties, with 88,122 people (2025 estimate). Its county seat is Ukiah. The map shows its 4 cities and towns and the 6 neighboring counties.
Mendocino County facts
- County seat
- Ukiah
- Population (2025 estimate)
- 88,122 −3.8% since 2020
- Land area
- 3,507 sq mi 15th largest of 58
- Water area
- 371 sq mi
- Population density
- 25 per sq mi
- Established
- 1850
- Named after
- Antonio de Mendoza Spanish colonial administrator
- Largest city
- Ukiah 16,068
- Median household income
- $68,092
- Cities and towns
- 4 plus 19 CDPs
- ZIP codes
- 29
- Time zone
- Pacific
- FIPS code
- 06045
Cities and towns in Mendocino County
Mendocino County has 4 incorporated cities, towns and villages. Populations count the people living inside Mendocino County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Ukiah (county seat) | City | 16,068 | |
| Fort Bragg | City | 6,946 | |
| Willits | City | 4,760 | |
| Point Arena | City | 453 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Brooktrails | 4,398 | |
| Redwood Valley | 1,898 | |
| Covelo | 1,286 | |
| Talmage | 1,128 | |
| Hopland | 983 | |
| Anchor Bay | 771 | |
| Laytonville | 720 | |
| Boonville | 667 | |
| Cleone | 613 | |
| Mendocino | 574 | |
| Calpella | 474 | |
| Potter Valley | 436 | |
| Caspar | 279 | |
| Albion | 250 | |
| Manchester | 184 | |
| Comptche | 163 | |
| Little River | 94 | |
| Philo | 60 | |
| Leggett | 24 |
ZIP codes in Mendocino County
29 ZIP codes reach into Mendocino County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 95410
- 95415
- 95417
- 95420
- 95425 also Sonoma County
- 95427
- 95428
- 95429
- 95432
- 95437
- 95445
- 95449
- 95454
- 95456
- 95459
- 95460
- 95463
- 95466
- 95468
- 95469 also Lake County
- 95470
- 95482
- 95488
- 95490
- 95494
- 95542 also Humboldt County
- 95585
- 95587
- 95589 also Humboldt County
Population of Mendocino County, 2020–2025
Mendocino County shrank by 3,463 people (−3.8%) between April 2020 and July 2025: 900 more deaths than births and a net loss of 2,608 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 91,348 |
| 2021 | 91,266 |
| 2022 | 90,033 |
| 2023 | 89,341 |
| 2024 | 88,939 |
| 2025 | 88,122 |
Neighboring counties
- Lake County southeast · 67,772 people
- Sonoma County southeast · 486,444 people
- Trinity County north · 15,720 people
- Humboldt County north · 131,647 people
- Glenn County east · 28,141 people
- Tehama County northeast · 64,665 people
Printable Mendocino 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) (118 KB)
- PNG (2400 px) (98 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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