Glen Carbon Real EstateGlen Carbon is located in Illinois. Glen Carbon, Illinois has a population of 12,776. Glen Carbon is more family-centric than the surrounding county with 39.16% of the households containing married families with children. The county average for households married with children is 29.92%. The median household income in Glen Carbon, Illinois is $84,153. The median household income for the surrounding county is $56,536 compared to the national median of $57,652. The median age of people living in Glen Carbon is 40.4 years. Glen Carbon WeatherThe average high temperature in July is 88.9 degrees, with an average low temperature in January of 23 degrees. The average rainfall is approximately 42.1 inches per year, with 12.1 inches of snow per year. Glen Carbon MapReal estate near Glen CarbonNearby CitiesNearby Cities Homes for Sale |