South Wilmington village, Illinois
Official LSAD Designation: South Wilmington village • Census GEOID: 1771370
• Grundy County
South Wilmington village is an incorporated village in Grundy County, Illinois. According to official records from the Census (2025), South Wilmington village had an estimated population of 719 residents. Official Census Bureau geographic records classify this community under LSAD designation South Wilmington village (GEOID 1771370).
Local Government Administration U.S. Census Bureau GMAF
Village Of South Wilmington
Municipal
Official Title:
Village Clerk
Address:
PO BOX 67, 380 LAKE ST, SOUTH WILMINGTON IL 60474-0067
County Of Grundy
County
Official Title:
Grundy County Treas
Address:
111 E WASHINGTON ST, ROOM 33, MORRIS IL 60450-2284
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 719 | 2025 |
| Median Household Income | $86,750 | 2020-2024 |
| Median Home Value | $174,400 | 2020-2024 |
| Land Area | 0.49 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).