
Blackwell
- County:
- Kay County
- County Seat:
- No
- Area (mi²):
- 5.582
- State:
- Oklahoma
Blackwell is a city located in Kay County, Oklahoma. Blackwell has a 2025 population of 6,074. Blackwell is currently growing at a rate of 0.02% annually and its population has increased by 0.1% since the most recent census, which recorded a population of 6,068 in 2020.
The average household income in Blackwell is $65,775 with a poverty rate of 17.25%. The median age in Blackwell is 37.4 years: 33.7 years for males, and 39.7 years for females.