Midway is a populated place LOCATED WITHIN the City of Caldwell. In turn, the City of Caldwell is located within Canyon County.
Midway is located at latitude 43.625 and longitude -116.632.
Since Midway is located within the City of Caldwell, all of the census and demographic data for residents of Midway are included as part of the information reported for City of Caldwell in the "Profile" tab above.