Tunnel Hill Real EstateTunnel Hill is located in Illinois. Tunnel Hill, Illinois has a population of 454. The median household income in Tunnel Hill, Illinois is $43,194. The median household income for the surrounding county is $45,743 compared to the national median of $57,652. The median age of people living in Tunnel Hill is 46.8 years. Tunnel Hill WeatherThe average high temperature in July is 89.3 degrees, with an average low temperature in January of 26.7 degrees. The average rainfall is approximately 47.7 inches per year, with 7.6 inches of snow per year. Tunnel Hill MapReal estate near Tunnel HillNearby CitiesNearby Cities Homes for Sale |