South Barrington IL is a village in Cook County, Illinois, United States south of Barrington, Illinois. The population was 4,209 at the 2010 census. South Barrington is a wealthy suburb of Chicago and home to the famous megachurch Willow Creek Community Church. The village is known throughout the area for its extreme affluence, and is on the list of the 100 wealthiest towns in the nation. The Arboretum of South Barrington is a new lifestyle center located within the village limits.
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