Middlegrove is located in Illinois. Middlegrove, Illinois has a population of 1,221.
The median household income in Middlegrove, Illinois is $53,295. The median household income for the surrounding county is $48,599 compared to the national median of $57,652. The median age of people living in Middlegrove is 39.4 years.
The average high temperature in July is 86.6 degrees, with an average low temperature in January of 15.5 degrees. The average rainfall is approximately 39 inches per year, with 20.3 inches of snow per year.