Madisonville is a city in Hopkins County, Kentucky of the Western Coal Field region. The population was 19,307 at the 2000 census. It is the county seat of Hopkins County. The city was named in honor of U.S. President James Madison. Madisonville apartments for rent comparison page shows most up to date rent information on Madisonville apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.