Tags: Military Structure.
Marine Corps Base Quantico also known as MCB Quantico is a United States Marine Corps installation located near Triangle Virginia covering nearly 100 square miles (260 km2) of southern Prince William County Virginia northern Stafford County and southeastern Fauquier County. Used primarily for training purposes MCB Quantico is known as the Crossroads of the Marine Corps.Quantico Station is a census-designated place (CDP) in Prince William County and Stafford counties in the U.S.