Kewanee is a city located in Henry County Illinois. With a 2020 population of 12,227, it is the 194th largest city in Illinois and the 2679th largest city in the United States . Kewanee is currently declining at a rate of -0.46% annually and its population has decreased by -5.33% since the most recent census, which recorded a population of 12,916 in 2010. Kewanee reached it's highest population of 17,093 in 1930. Spanning over 7 miles, Kewanee has a population density of 1,853 people per square mile.
The average household income in Kewanee is $52,958 with a poverty rate of 20.62%. The median rental costs in recent years comes to $621 per month, and the median house value is $60,000. The median age in Kewanee is 37.8 years, 36 years for males, and 39.9 years for females.