Gillespie city, Illinois
Official LSAD Designation: Gillespie city • Census GEOID: 1729236
• Macoupin County
Gillespie city is an incorporated city in Macoupin County, Illinois. According to official records from the Census (2025), Gillespie city had an estimated population of 3,083 residents. Official Census Bureau geographic records classify this community under LSAD designation Gillespie city (GEOID 1729236).
Local Government Administration U.S. Census Bureau GMAF
City Of Gillespie
Municipal
Official Title:
Mayor
Address:
115 N MACOUPIN ST, GILLESPIE IL 62033-1409
County Of Macoupin
County
Official Title:
County Clerk
Address:
201 E MAIN, PO BOX 107, CARLINVILLE IL 62626
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 3,083 | 2025 |
| Median Household Income | $82,772 | 2020-2024 |
| Median Home Value | $91,000 | 2020-2024 |
| Land Area | 1.48 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).