South Elgin is a city located in Kane County, Illinois. With a 2020 population of 23,649, it is the 98th largest city in Illinois and the 1626th largest city in the United States. South Elgin is currently growing at a rate of 0.43% annually and its population has increased by 7.57% 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 3,348 people per square mile.
The average household income in South Elgin is $113,350 with a poverty rate of 6.07%. The median rental costs in recent years comes to $1,427 per month, and the median house value is $229,300. The median age in South Elgin is 36.1 years, 35.3 years for males, and 36.8 years for females. For every 100 females there are 99.0 males.