Avalon is a populated place LOCATED WITHIN the City of Middletown. In turn, the City of Middletown is located within Butler County.
Avalon is located at latitude 39.531 and longitude -84.379.
Since Avalon is located within the City of Middletown, all of the census and demographic data for residents of Avalon are included as part of the information reported for City of Middletown in the "Profile" tab above.