County. The Orange Line (Washington Metro) and MARC Train's Penn Line will have transfer points at New Carrollton station. Prince George's County Commuter Rail The MARC Train (Maryland Area Rail Commuter) train service has two lines that traverse Prince George's County. The Camden Line, which runs between Baltimore Camden Station and Washington Union Station and has six stops in the county at Riverdale, College Park, Greenbelt, Muirkirk, Laurel and Laurel Race Track. The Penn Line runs on the Amtrak route between Pennsylvania and Washington Union stations. It has three stops in the county: Bowie, Seabrook and New Carrollton. Airports The College Park Airport (CGS), established in 1909, is the world's oldest continuously operated airport and is home to the adjacent College Park Aviation Museum. Privately owned general aviation airfields in the county include Freeway Airport (W00) in Mitchellville, Potomac Airfield (VKX) in Friendly, and Washington Executive Airpark/Hyde Field (W32) in Clinton, along with numerous private heliports. The area is served by three airports: Ronald Reagan Washington National Airport (DCA) in Arlington County, Virginia, Baltimore–Washington International Thurgood Marshall Airport (BWI) in neighboring Anne Arundel County, and Dulles International Airport (IAD) in Dulles, Virginia. Andrews Air Force Base (ADW), the airfield portion of Joint Base Andrews, is also near Camp Springs. Water taxi Prince George's County is served by a water taxi that operates from the National Harbor to Alexandria, Virginia and to The Wharf in Washington, D.C. Major highways Future transit Because of its location north and east of Washington, D.C., several future transit technology projects look to be routed partially through Prince George's County. The first stage of The Boring Company's proposed Washington-to-New York hyperloop will travel beneath the Baltimore–Washington Parkway through Prince George's en route to Baltimore. No hyperloop stops within the county are projected. Similarly, Maryland Governor Larry Hogan has supported efforts to trial a 40-mile superconducting maglev (SCMaglev) train route connecting Washington to Baltimore. Proposed routes would run through Prince George's parallel to the Baltimore–Washington Parkway or along the Amtrak Penn Line corridor. As with the hyperloop, no SCMaglev stop is planned within Prince George's County. The Purple Line light transit rail is currently in construction in College Park and New Carrollton. Demographics Prince George's County is the wealthiest African American-majority county in the United States. 2020 census Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and