Tonica is located in Illinois. Tonica, Illinois has a population of 664. Tonica is more family-centric than the surrounding county with 28% households with children. The county percentage for households with children is 26%.
The median household income in Tonica, Illinois is $58,816. The median household income for the surrounding county is $59,610 compared to the national median of $66,222. The median age of people living in Tonica is 40.9 years.
The average high temperature in July is 85.77 degrees, with an average low temperature in January of 12.23 degrees. The annual precipitation is 37.53.