
Okanogan County
- State:
- Washington
- County Seat:
- Okanogan
Okanogan County's estimated 2025 population is 44,216 with a growth rate of 0.57% in the past year according to the most recent United States census data. Okanogan County is the 26th largest county in Washington. The 2010 population was 41,224 and has seen a growth of 7.26% since that time.