McLean is located in Illinois. McLean, Illinois has a population of 796. McLean is less family-centric than the surrounding county with 22.14% of the households containing married families with children. The county average for households married with children is 35.25%.
The median household income in McLean, Illinois is $68,542. The median household income for the surrounding county is $64,573 compared to the national median of $57,652. The median age of people living in McLean is 48.1 years.
The average high temperature in July is 85.3 degrees, with an average low temperature in January of 15.2 degrees. The average rainfall is approximately 38.5 inches per year, with 19.5 inches of snow per year.