South Jacksonville is located in Illinois. South Jacksonville, Illinois has a population of 3,235. South Jacksonville is less family-centric than the surrounding county with 14.47% of the households containing married families with children. The county average for households married with children is 23.69%.
The median household income in South Jacksonville, Illinois is $55,526. The median household income for the surrounding county is $55,261 compared to the national median of $69,021. The median age of people living in South Jacksonville is 47 years.
The average high temperature in July is 87.2 degrees, with an average low temperature in January of 17.7 degrees. The average rainfall is approximately 39.9 inches per year, with 18 inches of snow per year.
