- Location: Union County, Illinois
- Legal status: Village
- Population: 388 (Change since 1990: -7.0%)
- Founded: Jan. 20, 1875
- Previously known as: Quetil
- Located on IL 127 northwest of Cobden
- Latitude: 37°34'13" N (+37.5703)
- Longitude: 89°19'03" W (-89.3175)
- Elevation: 757 feet above sea level
- Land area: 2.1 square miles
- Water area: 0.02 square miles (15.8 acres)
As the crow flies, Alto Pass is...
Timeline
- Jan. 20, 1875
- Alto Pass founded
- Sep. 9, 1875
- Alto Pass Post office opened
- Apr. 8, 1882
- Alto Pass incorporated
| Year | Population | Percent change |
|---|
| 1990 | 417 | -- |
| 2000 | 388 | -7.0% |