- Location: Jackson County, Illinois
- Legal status: Village
- Population: 491 (Change since 1990: +56.4%)
- Previously known as: Middletown
- Located just off IL 3 north of Finney
- Latitude: 37°54'08" N (+37.9022)
- Longitude: 89°20'08" W (-89.3356)
- Elevation: 400 feet above sea level
- Public Land Survey: T. 7 S., R. 2 W., Sec. 20-21
- Civil township: Vergennes
- Land area: 0.36 square miles (231.5 acres)
As the crow flies, Vergennes is...
| Year | Population | Percent change |
|---|
| 1990 | 314 | -- |
| 2000 | 491 | +56.4% |