Kewanee is a city in Henry County, Illinois, United States. 'Kewanee' is the Winnebago word for prairie chicken, which lekked there. The population was 12,944 at the 2000 census. Kewanee apartments for rent comparison page shows most up to date rent information on Kewanee apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.