South Elgin is located in Illinois. South Elgin, Illinois has a population of 22,322. South Elgin is more family-centric than the surrounding county with 44.53% of the households containing married families with children. The county average for households married with children is 39.24%.
The median household income in South Elgin, Illinois is $89,565. The median household income for the surrounding county is $74,862 compared to the national median of $57,652. The median age of people living in South Elgin is 36.7 years.
The average high temperature in July is 83.7 degrees, with an average low temperature in January of 13.4 degrees. The average rainfall is approximately 38 inches per year, with 29 inches of snow per year.