Tonica is located in Illinois. Tonica, Illinois has a population of 706. Tonica is more family-centric than the surrounding county with 32.09% of the households containing married families with children. The county average for households married with children is 25.66%.
The median household income in Tonica, Illinois is $58,958. The median household income for the surrounding county is $62,825 compared to the national median of $69,021. The median age of people living in Tonica is 39.7 years.
The average high temperature in July is 85 degrees, with an average low temperature in January of 14.3 degrees. The average rainfall is approximately 36.9 inches per year, with 22 inches of snow per year.
