Barnett Township is located in Illinois. Barnett Township, Illinois has a population of 3,630.
The median household income in Barnett Township, Illinois is $45,877. The median household income for the surrounding county is $55,411 compared to the national median of $57,652. The median age of people living in Barnett Township is 38.7 years.
The average high temperature in July is 84.7 degrees, with an average low temperature in January of 16.3 degrees. The average rainfall is approximately 39.4 inches per year, with 18.3 inches of snow per year.
