Cortland is located in Illinois. Cortland, Illinois has a population of 4,436. Cortland is more family-centric than the surrounding county with 45.53% of the households containing married families with children. The county average for households married with children is 31.37%.
The median household income in Cortland, Illinois is $72,431. The median household income for the surrounding county is $64,019 compared to the national median of $69,021. The median age of people living in Cortland is 30.2 years.
The average high temperature in July is 82.9 degrees, with an average low temperature in January of 12.5 degrees. The average rainfall is approximately 37.2 inches per year, with 30.9 inches of snow per year.
