Seat Pleasant is an incorporated city in Prince George's County, Maryland, United States, immediately east of Washington D.C. The population was 4,542 at the 2010 census. Two state highways run through it — Maryland Route 704 (now called Martin Luther King Highway and previously named George Palmer Highway after a banker and community leader) and Maryland Route 214 (Central Avenue). The Washington Metro's Blue Line is nearby. The Washington Redskins stadium is east of Seat Pleasant, near the Capital Beltway (I-95/495).