Tonkawa
- County:
- Kay County
- County Seat:
- No
- Area (mi²):
- 4.128
- State:
- Oklahoma
Tonkawa is a city located in Kay County, Oklahoma. Tonkawa has a 2026 population of 2,988. Tonkawa is currently declining at a rate of -0.66% annually and its population has decreased by -1.03% since the most recent census, which recorded a population of 3,019 in 2020.