Alto Pass is a village in Union County, Illinois, United States. The population was 391 at the 2010 census, an increase from 388 in 2000. The Bald Knob Cross and Bald Knob Wilderness are nearby.

Find crucial information and trip planning details about Alto Pass, which is a city in United States. The nearest major city to Alto Pass is Saint Louis. Take a short trip from Alto Pass and set some time aside to explore the Saint Louis. Dotted with places like Gateway Arch, Saint Louis Zoo, City Museum; it will definitely be a good idea. 1-2 days is an ideal duration of visit to Alto Pass.