South Barrington is a residential suburb in Cook County, Illinois, United States, south of Barrington. The population was 4,993 at the 2018 census. South Barrington is a wealthy suburb of Chicago featuring some of the largest homes in Illinois. It is the location of the famous megachurch Willow Creek Community Church, Goebbert's Pumpkin Patch and Farm, and a lifestyle center (shopping center) named The Arboretum of South Barrington.
South Barrington is located at 42°5′3″N 88°9′17″W (42.084226, -88.15478).
According to the 2010 census, South Barrington has a total area of 7.619 square miles (19.73 km2), of which 7.34 square miles (19.01 km2) (or 96.34%) is land and 0.279 square miles (0.72 km2) (or 3.66%) is water.
At the 2000 census, there were 3,760 people, 1,147 households and 1,060 families residing in the village. The population density was 573.6 per square mile (221.3/km2). There were 1,172 housing units at an average density of 178.8 per square mile (69.0/km2). The racial makeup of the village was 69.6% White, 0.88% African American, 0.05% Native American, 26.6% Asian, 0.03% Pacific Islander, 0.53% from other races, and 1.78% from two or more races. Hispanic or Latino of any race were 0.84% of the population. In 2011, South Barrington was the Chicago suburb with the highest percentage of Asian people.
There were 1,147 households, of which 47.7% had children under the age of 18 living with them, 86.1% were married couples living together, 4.1% had a female householder with no husband present, and 7.5% were non-families.