Fairmont City is located in Illinois. Fairmont City, Illinois has a population of 2,313. Fairmont City is more family-centric than the surrounding county with 41% households with children. The county percentage for households with children is 28%.
The median household income in Fairmont City, Illinois is $40,707. The median household income for the surrounding county is $59,624 compared to the national median of $66,222. The median age of people living in Fairmont City is 33.4 years.
The average high temperature in July is 88.7 degrees, with an average low temperature in January of 20 degrees. The annual precipitation is 40.33.