Thomson is located in Illinois. Thomson, Illinois has a population of 412. Thomson is less family-centric than the surrounding county with 11.2% of the households containing married families with children. The county average for households married with children is 23.24%.
The median household income in Thomson, Illinois is $50,556. The median household income for the surrounding county is $54,959 compared to the national median of $69,021. The median age of people living in Thomson is 58.4 years.
The average high temperature in July is 84.8 degrees, with an average low temperature in January of 12.2 degrees. The average rainfall is approximately 36.9 inches per year, with 30.3 inches of snow per year.