Largo is an unincorporated area and census designated place in Prince George's County, Maryland, in the United States. The population was 8,408 at the 2000 census.
Largo is home to the Six Flags America amusement park (formerly known as Wild World and Adventure World) and since 1967 to the very large Prince George's Community College and Largo High School. FedExField, the Washington Redskins' football stadium, is nearby, across the Capital Beltway (I-95/495). Watkins Regional Park (operated by the Maryland-National Capital Park and Planning Commission), has an old-fasioned carousel, miniature train ride, miniature golf, the Old Maryland Farm, a very large playground, and animals on display. The middle-class residential developments Kettering and Arbor West, the newer upscale Woodmore, and Lake Arbor communities with their gated homes and country club, home to Prince Georges County government officials and other successful African Americans, are especially noteworthy. Largo is not a post office designation, but is at the northern end of Greater Upper Marlboro which is the mailing address.
Since the transit system's expansion in late 2004, Largo Town Center has served as the site of the eastern end of the Blue Line of the Washington Metro.