Fort Mason is a populated place LOCATED WITHIN the City of Eustis. In turn, the City of Eustis is located within Lake County.
Fort Mason is located at latitude 28.877 and longitude -81.701.
Since Fort Mason is located within the City of Eustis, all of the census and demographic data for residents of Fort Mason are included as part of the information reported for City of Eustis in the "Profile" tab above.