Troy city, Illinois
Official LSAD Designation: Troy city • Census GEOID: 1776199
• Madison County
Troy city is an incorporated city in Madison County, Illinois. According to official records from the Census (2025), Troy city had an estimated population of 11,893 residents. Official Census Bureau geographic records classify this community under LSAD designation Troy city (GEOID 1776199).
Local Government Administration U.S. Census Bureau GMAF
City Of Troy
Municipal
Official Title:
City Clerk
Address:
116 E MARKET ST, TROY IL 62294-1510
County Of Madison
County
Official Title:
Auditor
Address:
157 N MAIN ST, RM 382, EDWARDSVILLE IL 62025-1965
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 11,893 | 2025 |
| Median Household Income | $112,434 | 2020-2024 |
| Median Home Value | $268,000 | 2020-2024 |
| Land Area | 6.38 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).