Eldorado is located in Illinois. Eldorado, Illinois has a population of 4,151. Eldorado is more family-centric than the surrounding county with 32.34% of the households containing married families with children. The county average for households married with children is 28.31%.
The median household income in Eldorado, Illinois is $30,799. The median household income for the surrounding county is $40,722 compared to the national median of $57,652. The median age of people living in Eldorado is 36.4 years.
The average high temperature in July is 88.6 degrees, with an average low temperature in January of 23.2 degrees. The average rainfall is approximately 46.5 inches per year, with 3.9 inches of snow per year.