Monticello is located in Illinois. Monticello, Illinois 61856has a population of 5,656. Monticello 61856 is less family-centric than the surrounding county with 28% households with children. The county percentage for households with children is 28%.
The median household income in Monticello, Illinois 61856 is $76,460. The median household income for the surrounding county is $71,063 compared to the national median of $66,222. The median age of people living in Monticello 61856 is 43.3 years.
The average high temperature in July is 85.4 degrees, with an average low temperature in January of 14.3 degrees. The annual precipitation is 39.68.