South Wilmington, IL

Population
719
U.S. Census Population Estimates Program · 2025
Elevation
585 ft
Median Home Value
$174,400
U.S. Census American Community Survey 5-Year · 2024
Median Rent
$1,277/mo
U.S. Census American Community Survey 5-Year · 2024
Median Income
$86,750
U.S. Census American Community Survey 5-Year · 2024

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South Wilmington in context.

About South Wilmington

South Wilmington is a Grundy County village about 11 miles southwest of Wilmington, with 710 residents in the 2020 census. Its name suggests a suburb of Wilmington, yet the village sits among Gardner, Braceville, Godley, and Braidwood, with its own municipal story. The community came into existence in 1900, and its early map was tied to northern Illinois coal country. That coal connection remains visible through the South Wilmington Volunteer Fire Department’s Beach and Park Club, which grew from land acquired or leased from coal companies in the late 1950s.

The village’s current routines are straightforward and local: South Wilmington operates its own water service, posts water-quality information, maintains recycling pickup, and hosts the annual Party in the Park. School lines cross the village boundary. Most households fall in South Wilmington Consolidated School District 74, a portion lies in Gardner Community Consolidated District 72C, and all students move into Gardner-South Wilmington Township High School District. That combination gives the place a distinct shape: a small coal-era community with its own water system, volunteer recreation tradition, and shared schools with the surrounding towns.

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