Montrose, also known as Sibley City, is an unincorporated community in Baldwin County, Alabama, United States along the eastern shore of Mobile Bay. Montrose is part of the Daphne–Fairhope–Foley Micropolitan Statistical Area. Montrose has two sites included on the National Register of Historic Places, the Henry Stuart House and the Montrose Historic …Montrose, also known as Sibley City, is an unincorporated community in Baldwin County, Alabama, United States along the eastern shore of Mobile Bay. Montrose is part of the Daphne–Fairhope–Foley Micropolitan Statistical Area. Montrose has two sites included on the National Register of Historic Places, the Henry Stuart House and the Montrose Historic District.