Great Mills is an unincorporated community and populated place in St. Mary's County, Maryland, United States. It is located in southern St. Mary's County near Lexington Park and Naval Air Station Patu
Maryland Route 471 is a state highway in the U.S. state of Maryland. Known as Indian Bridge Road, the state highway runs 1.01 miles from MD 5 north to a crossing of the St. Marys River within Great Mi
View north from the south end of MD 471 at MD 5 in Great Mills