Home>Choose State>Cities in Michigan>Institutions in Cadillac>Northwestern Bank Locations in Cadillac Northwestern Bank Branch Locations in Cadillac, MI 1. Northwestern Bank - 150 Granite St Branch 150 Granite Street, Cadillac, MI 49601 (231) 775-8564 View Branch 2. Northwestern Bank - Cadillac North Branch 1573 North Mitchell, Cadillac, MI 49601 (231) 775-9077 View Branch