South Elgin is a city located in Kane County Illinois. With a 2020 population of 27,497, it is the 73rd largest city in Illinois and the 1398th largest city in the United States . South Elgin is currently growing at a rate of 5.25% annually and its population has increased by 25.07% since the most recent census, which recorded a population of 21,985 in 2010. South Elgin reached it's highest population of 27,497 in 2021. Spanning over 7 miles, South Elgin has a population density of 3,892 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.