Glenn Real EstateGlenn real estate listings include condos, townhomes, and single family homes for sale. Commercial properties are also available. If you see a property you’re interested in, contact a Glenn real estate agent to arrange a tour today! Glenn, Illinois has a population of 14. The median household income in Glenn, Illinois is $66,250. The median household income for the surrounding county is $49,717 compared to the national median of $57,652. The median age of people living in Glenn is 53.5 years. Glenn WeatherThe average high temperature in July is 88.9 degrees, with an average low temperature in January of 22.1 degrees. The average rainfall is approximately 43.7 inches per year, with 10.7 inches of snow per year. Nearby Homes for Sale |