South Barrington is a residential suburb in Cook County, Illinois, United States, south of Barrington. Per the 2020 census, the population was 5,077. South Barrington is a wealthy suburb of Chicago. 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 / ﻿42.08417°N 88.15472°W﻿ / 42.08417; -88.15472 (42.084226, -88.15478).
 According to the 2021 census gazetteer files, South Barrington has a total area of 7.71 square miles (19.97 km2), of which 7.43 square miles (19.24 km2) (or 96.33%) is land and 0.28 square miles (0.73 km2) (or 3.67%) is water.
 As of the 2020 census there were 5,077 people, 1,534 households, and 1,447 families residing in the village. The population density was 658.50 inhabitants per square mile (254.25/km2). There were 1,722 housing units at an average density of 223.35 per square mile (86.24/km2). The racial makeup of the village was 53.20% White, 40.20% Asian, 0.77% African American, 0.12% Native American, 0.55% from other races, and 5.16% from two or more races. Hispanic or Latino of any race were 3.17% of the population.
 There were 1,534 households, out of which 40.6% had children under the age of 18 living with them, 86.64% were married couples living together, 5.87% had a female householder with no husband present, and 5.67% were non-families. 2.74% of all households were made up of individuals, and 1.76% 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 3.24.
 The village's age distribution consisted of 28.7% under the age of 18, 4.6% from 18 to 24, 11.7% from 25 to 44, 36.1% from 45 to 64, and 18.8% who were 65 years of age or older. The median age was 48.5 years. For every 100 females, there were 98.8 males. For every 100 females age 18 and over, there were 103.0 males.
 The median income for a household in the village was $183,750, and the median income for a family was $188,496. Males had a median income of $128,277 versus $58,750 for females. The per capita income for the village was $71,005. About 0.8% of families and 1.7% of the population were below the poverty line, including 0.0% of those under age 18 and 2.9% of those age 65 or over.
 Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos can be of any race.
 Most of South Barrington's zoned public schools are in Barrington District 220. The schools in this district that are assigned to homes in the village are:
 A small portion of the village is served by Thomas Jefferson Elementary School (K-6) in nearby Hoffman Estates, Carl Sandburg Junior High School (7-8) in Rolling Meadows, both of District 15, and William Fremd High School (9-12; Township High School District 211) in Palatine. Another small portion of South Barrington is served by District 300, specifically Parkview Elementary School, Carpentersville Middle School, and Dundee Crown High School. These three schools are located in Carpentersville, Illinois.
 Former: Evanston
• Hyde Park
• Jefferson
• Lake
• Lake View
• North Chicago
• Rogers Park
• South Chicago
• West Chicago