Watonga
- County:
- Blaine County
- County Seat:
- Yes
- Area (mi²):
- 3.769
- State:
- Oklahoma
Watonga is a city located in Blaine County, Oklahoma. Watonga has a 2026 population of 2,617. It is also the county seat of Blaine County. Watonga is currently growing at a rate of 0.11% annually but its population has decreased by -2.46% since the most recent census, which recorded a population of 2,683 in 2020.