In 2021, South Wilmington, IL had a population of 643 people with a median age of 38.5 and a median household income of $76,667. Between 2020 and 2021 the population of South Wilmington, IL declined from 702 to 643, a −8.4% decrease and its median household income grew from $75,156 to $76,667, a 2.01% increase.
The 5 largest ethnic groups in South Wilmington, IL are White (Non-Hispanic) (98.6%), Two+ (Non-Hispanic) (1.4%), White (Hispanic) (0%), Black or African American (Non-Hispanic) (0%), and Black or African American (Hispanic) (0%).
None of the households in South Wilmington, IL reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
100% of the residents in South Wilmington, IL are U.S. citizens.
In 2021, the median property value in South Wilmington, IL was $142,300, and the homeownership rate was 81.9%.
Most people in South Wilmington, IL drove alone to work, and the average commute time was 35.4 minutes. The average car ownership in South Wilmington, IL was 2 cars per household.