Upper Alton is a populated place LOCATED WITHIN the City of Alton. In turn, the City of Alton is located within Madison County.
Upper Alton is located at latitude 38.911 and longitude -90.151.
Since Upper Alton is located within the City of Alton, all of the census and demographic data for residents of Upper Alton are included as part of the information reported for City of Alton in the "Profile" tab above.