Marine Corps Base Quantico

Marine Corps Base Quantico (commonly abbreviated MCB Quantico) is a United States Marine Corps installation near Triangle, Virginia, covering nearly 55,148 acres (86.169 sq mi; 22,318 ha; 223.18 km2) of southern Prince William County, Virginia, northern Stafford County, and southeastern Fauquier County. Used primarily for training and run on a budget of around $300 million, MCB Quantico is known as the "Crossroads of the Marine Corps". Quantico Base is a census-designated place (CDP) in Prince William and Stafford counties in the U.S. state of Virginia, used by the Census Bureau to describe base housing. The population was 5,608 as of 2025. The base is host to various units and commands, including: Marine Corps' Combat Development Command, which develops combat strategies and accounts for most of the community of over 12,000 military and civilian personnel, including families Marine Corps Officer Candidates School Marine Corps Research Center at Quantico, which pursues equipment research and development, especially telecommunications The FBI Academy, the principal research and training facility of the Federal Bureau of Investigation The Drug Enforcement Administration (DEA)'s principal training facility United States Army Criminal Investigation Division (CID) Marine Corps Brig, a military prison, was also located at Quantico; it was closed on 31 December 2011 and later demolished. In 2001, the base was designated as part of the Quantico Marine Corps Base Historic District by the National Register of Historic Places. This district includes 122 buildings, two landscapes, a sculpture, and a water tower in the Mainside (east of I-95) area of the base. The contributing properties with separate entries include Tennessee Camp, Camp French, Commanding General’s Quarters, and Rising Hill Camp.