
South Barrington
- County:
- Cook County
- County Seat:
- No
- Area (mi²):
- 7.458
- State:
- Illinois
South Barrington is a village located in Cook County, Illinois. South Barrington has a 2025 population of 4,913. South Barrington is currently declining at a rate of -0.61% annually and its population has decreased by -3% since the most recent census, which recorded a population of 5,065 in 2020.
The average household income in South Barrington is $305,743 with a poverty rate of 1.32%. The median age in South Barrington is 49.2 years: 49 years for males, and 49.6 years for females.