
Knoxville
- County:
- Knox County
- County Seat:
- No
- Area (mi²):
- 2.35
- State:
- Illinois
Knoxville is a city located in Knox County, Illinois. Knoxville has a 2025 population of 2,764. Knoxville is currently declining at a rate of -0.9% annually and its population has decreased by -4.39% since the most recent census, which recorded a population of 2,891 in 2020.
The average household income in Knoxville is $85,066 with a poverty rate of 6.62%. The median age in Knoxville is 43.3 years: 35.9 years for males, and 49.7 years for females.