
Kewanee
- County:
- Henry County
- County Seat:
- No
- Area (mi²):
- 6.598
- State:
- Illinois
Kewanee is a city located in Henry County, Illinois. Kewanee has a 2025 population of 12,064. Kewanee is currently declining at a rate of -0.65% annually and its population has decreased by -3.16% since the most recent census, which recorded a population of 12,458 in 2020.
The average household income in Kewanee is $61,713 with a poverty rate of 15.13%. The median age in Kewanee is 43.6 years: 44.1 years for males, and 42.8 years for females.