Alturas
- County:
- Modoc County
- County Seat:
- Yes
- Area (mi²):
- 2.839
- State:
- California
Alturas is a city located in Modoc County, California. Alturas has a 2026 population of 2,652. It is also the county seat of Modoc County. Alturas is currently declining at a rate of -0.79% annually and its population has decreased by -1.78% since the most recent census, which recorded a population of 2,700 in 2020.