South Elgin is a city located in Illinois. With a 2020 population of 26,126, it is the 84th largest city in Illinois and the 1467th largest city in the United States. South Elgin is currently growing at a rate of 5.54% annually and its population has increased by 18.84% since the most recent census, which recorded a population of 21,985 in 2010. Spanning over 7 miles, South Elgin has a population density of 3,698 people per square mile.
The average household income in South Elgin is $118,326 with a poverty rate of 6.01%. The median rental costs in recent years comes to $1,415 per month, and the median house value is $235,500. The median age in South Elgin is 37.5 years, 35.9 years for males, and 38.3 years for females. For every 100 females there are 101.5 males.