- Located west of Robbs and northeast of Vienna
- Latitude: 37°28'02" N (+37.4672)
- Longitude: 88°45'18" W (-88.7550)
- Elevation: 405 feet above sea level
- Public Land Survey: T. 12 S., R. 4 E.
- Civil township: Simpson
- Land area: 0.52 square miles (334.1 acres)
As the crow flies, Simpson is...
| Year | Population | Percent change |
|---|
| 1990 | 61 | -- |
| 2000 | 54 | -11.5% |