Wilmington city, Illinois
Official LSAD Designation: Wilmington city • Census GEOID: 1782101
• Will County
Wilmington city is an incorporated city in Will County, Illinois. According to official records from the Census (2025), Wilmington city had an estimated population of 5,614 residents. Official Census Bureau geographic records classify this community under LSAD designation Wilmington city (GEOID 1782101).
Local Government Administration U.S. Census Bureau GMAF
City Of Wilmington
Municipal
Official Title:
Administrator
Address:
1165 S WATER ST, WILMINGTON IL 60481-1633
County Of Will
County
Official Title:
Accounting Manager
Address:
302 N CHICAGO ST, JOLIET IL 60432-4059
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 5,614 | 2025 |
| Median Household Income | $66,154 | 2020-2024 |
| Median Home Value | $223,800 | 2020-2024 |
| Land Area | 14.24 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).