Harmon is located in Illinois. Harmon, Illinois has a population of 90. Harmon is more family-centric than the surrounding county with 31% households with children. The county percentage for households with children is 26%.
The median household income in Harmon, Illinois is $54,773. The median household income for the surrounding county is $60,397 compared to the national median of $66,222. The median age of people living in Harmon is 44.8 years.
The average high temperature in July is 82.83 degrees, with an average low temperature in January of 10.21 degrees. The annual precipitation is 36.86.