Dupo village, Illinois
Official LSAD Designation: Dupo village • Census GEOID: 1721254
• Monroe County / St. Clair County
Dupo village is an incorporated village in Monroe County, St. Clair County, Illinois. According to official records from the Census (2025), Dupo village had an estimated population of 3,766 residents. Official Census Bureau geographic records classify this community under LSAD designation Dupo village (GEOID 1721254).
Local Government Administration U.S. Census Bureau GMAF
Village Of Dupo
Municipal
Official Title:
Mayir
Address:
107 N 2ND ST, DUPO IL 62239-1202
County Of Monroe
County
Official Title:
Treasurer
Address:
100 S MAIN ST, WATERLOO IL 62298
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 3,766 | 2025 |
| Median Household Income | $61,644 | 2020-2024 |
| Median Home Value | $113,800 | 2020-2024 |
| Land Area | 6.18 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).