
Modoc County
- State:
- California
- County Seat:
- Alturas
Modoc County's estimated 2025 population is 8,262 with a growth rate of -1.42% in the past year according to the most recent United States census data. Modoc County is the 56th largest county in California. The 2010 population was 9,698 and has seen a growth of -14.81% since that time.