South Barrington is a village in Cook County, Illinois, United States, south of Barrington. The population was 4,565 at the 2010 census. South Barrington is a wealthy suburb of Chicago and the location of the famous megachurch Willow Creek Community Church. The Arboretum of South Barrington is a lifestyle center (shopping center) located within the village limits.
South Barrington is located at 42°5′3″N 88°9′17″W / 42.08417°N 88.15472°W / 42.08417; -88.15472 (42.084226, -88.15478).
According to the 2010 census, South Barrington has a total area of 7.619 square miles (19.73 km), of which 7.34 square miles (19.01 km) (or 96.34%) is land and 0.279 square miles (0.72 km) (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. 5.8% of all households were made up of individuals and 1.7% had someone living alone who was 65 years of age or older. The average household size was 3.28 and the average family size was 3.41.
29.8% of the population were under the age of 18, 7.0% from 18 to 24, 20.3% from 25 to 44, 36.0% from 45 to 64, and 6.8% who were 65 years of age or older. The median age was 42 years. For every 100 females, there were 97.9 males. For every 100 females age 18 and over, there were 98.5 males.
The median household income was $170,755 and the median family income was $174,318. The per capita income was $76,078. About 1.4% of families and 2.6% of the population were below the poverty line, including 4.5% of those under age 18 and 0.5% of those age 65 or over.