| Official Name: | North Dupo, Illinois |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Illinois |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | St. Clair |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 410 |
| Coordinates: | 38.5494°N -90.2006°W |
| Area Code: | 618 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 426445 |
North Dupo is an unincorporated community in Sugarloaf Township, St. Clair County, Illinois, United States. North Dupo is located along Illinois Route 3 south of Cahokia and north of Dupo, bordering both villages.[1] The Pierre Martin House, which is listed on the National Register of Historic Places, is located in North Dupo.