Tuolumne County, California
County seat: Sonora · Population 53,160 (2025) · 2,221 sq mi
Tuolumne County is the 43rd most populous of California's 58 counties, with 53,160 people (2025 estimate). Its county seat is Sonora. The map shows its 1 city or town and the 6 neighboring counties.
Tuolumne County facts
- County seat
- Sonora
- Population (2025 estimate)
- 53,160 −4.4% since 2020
- Land area
- 2,221 sq mi 23rd largest of 58
- Water area
- 54 sq mi
- Population density
- 24 per sq mi
- Established
- 1850
- Largest city
- Sonora 4,866
- Median household income
- $77,404
- Cities and towns
- 1 plus 18 CDPs
- ZIP codes
- 17
- Time zone
- Pacific
- FIPS code
- 06109
Cities and towns in Tuolumne County
Tuolumne County has 1 incorporated place. Populations count the people living inside Tuolumne County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Sonora (county seat) | City | 4,866 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Phoenix Lake | 4,794 | |
| Mono Vista | 3,675 | |
| Jamestown | 3,265 | |
| East Sonora | 2,651 | |
| Pine Mountain Lake | 2,498 | |
| Twain Harte | 2,372 | |
| Columbia | 2,235 | |
| Soulsbyville | 2,101 | |
| Cedar Ridge | 1,671 | |
| Tuolumne City | 1,148 | |
| Mi-Wuk Village | 886 | |
| Groveland | 490 | |
| Tuttletown | 440 | |
| Sierra Village | 150 | |
| Chinese Camp | 69 | |
| Strawberry | 56 | |
| Long Barn | 29 | |
| Cold Springs | 19 |
ZIP codes in Tuolumne County
17 ZIP codes reach into Tuolumne County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 95223 also Alpine and Calaveras counties
- 95305
- 95309
- 95310
- 95311 also Mariposa County
- 95321 also Mariposa County
- 95327
- 95329 also Stanislaus and Mariposa counties
- 95335
- 95346
- 95364
- 95370
- 95372
- 95375
- 95379
- 95383
- 95389 also Mariposa County
Population of Tuolumne County, 2020–2025
Tuolumne County shrank by 2,452 people (−4.4%) between April 2020 and July 2025: 1,697 more deaths than births and a net loss of 805 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 55,369 |
| 2021 | 55,135 |
| 2022 | 53,987 |
| 2023 | 54,172 |
| 2024 | 54,185 |
| 2025 | 53,160 |
Neighboring counties
- Mariposa County south · 16,918 people
- Mono County east · 12,505 people
- Calaveras County west · 46,605 people
- Alpine County north · 1,043 people
- Stanislaus County southwest · 557,719 people
- Madera County south · 167,927 people
Printable Tuolumne 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) (167 KB)
- PNG (2400 px) (97 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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