Modoc County, California
County seat: Alturas · Population 8,426 (2025) · 3,948 sq mi
Modoc County is the 56th most populous of California's 58 counties, with 8,426 people (2025 estimate). Its county seat is Alturas. The map shows its 1 city or town and the 6 neighboring counties.
Modoc County facts
- County seat
- Alturas
- Population (2025 estimate)
- 8,426 −3.2% since 2020
- Land area
- 3,948 sq mi 12th largest of 58
- Water area
- 255 sq mi
- Population density
- 2 per sq mi
- Established
- 1874
- Named after
- Modoc people Northwestern Native American people
- Largest city
- Alturas 2,634
- Median household income
- $59,455
- Cities and towns
- 1 plus 12 CDPs
- ZIP codes
- 13
- Time zone
- Pacific
- FIPS code
- 06049
Cities and towns in Modoc County
Modoc County has 1 incorporated place. Populations count the people living inside Modoc County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Alturas (county seat) | City | 2,634 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Cedarville | 575 | |
| Newell | 472 | |
| California Pines | 427 | |
| Canby | 259 | |
| Fort Bidwell | 190 | |
| Adin | 153 | |
| Daphnedale Park | 106 | |
| New Pine Creek | 84 | |
| Lookout | 49 | |
| Lake City | 39 | |
| Eagleville | 33 | |
| Likely | 0 |
ZIP codes in Modoc County
13 ZIP codes reach into Modoc County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 96006 also Lassen County
- 96015
- 96054
- 96056 also Lassen and Shasta counties
- 96101
- 96104
- 96108
- 96110 also Lassen County
- 96112
- 96115
- 96116
- 96134 also Siskiyou County
- 97635
Population of Modoc County, 2020–2025
Modoc County shrank by 281 people (−3.2%) between April 2020 and July 2025: 319 more deaths than births and a net gain of 39 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 8,679 |
| 2021 | 8,621 |
| 2022 | 8,602 |
| 2023 | 8,542 |
| 2024 | 8,535 |
| 2025 | 8,426 |
Neighboring counties
- Lassen County south · 28,117 people
- Siskiyou County west · 42,013 people
- Washoe County, Nevada southeast · 509,386 people
- Lake County, Oregon north · 8,187 people
- Klamath County, Oregon northwest · 70,274 people
- Shasta County southwest · 181,648 people
Printable Modoc 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) (82 KB)
- PNG (2400 px) (58 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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