Dupo, Illinois
Dupo is a village in St. Clair County, Illinois, with an estimated population of 3,821 in 2023. It sits at 38.5161, -90.2176 in the America/Chicago time zone.
| Field | Value |
|---|---|
| Place name | Dupo |
| Type | village |
| State | Illinois (IL) |
| County | St. Clair County |
| Population (2023 est.) | 3,821 |
| Land area | 6.40 sq mi (16.58 km²) |
| Coordinates | 38.5161, -90.2176 |
| Time zone | America/Chicago |
| ZIP codes | 62239 |
This place also extends into Monroe County.
ZIP codes and area codes for Dupo
Dupo covers 1 ZIP code: 62239. Browse all ZIP codes in Illinois for the full list.
Where is Dupo?
Dupo is located in Illinois, in St. Clair County. The coordinates above can be pasted directly into any map service. The nearest indexed places are listed below, which is a useful check when two states share a place name.
Nearby places
East Carondelet 3 km · ILColumbia 6 km · ILBella Villa 7 km · MOCahokia Heights 8 km · ILWilbur Park 9 km · MOGreen Park 10 km · MOLakeshire 11 km · MOMarlborough 12 km · MO
Other places in St. Clair County
Belleville 40,726O'Fallon 31,968East St. Louis 17,642Cahokia Heights 17,114Fairview Heights 16,125Shiloh 14,736Swansea 14,472Mascoutah 8,916Lebanon 4,571Freeburg 4,501
Frequently asked questions
What county is Dupo, IL in?
Dupo is in St. Clair County, Illinois.
What is the population of Dupo, IL?
The 2023 Census Bureau estimate is 3,821.
What time zone is Dupo in?
Dupo is in the America/Chicago time zone.