Glenn Dale is an unincorporated area and census-designated place (CDP) in Prince George's County, Maryland, United States. The population was 13,466 at the 2010 census. Glenn Dale is home to the Glenn Dale Hospital, an abandoned sanatorium, and the USDA Plant Introduction Station.
Glenn Dale is located at 38°58′58″N 76°48′24″W (38.982902, −76.806748).
According to the United States Census Bureau, the CDP has a total area of 7.2 square miles (18.7 km2), of which 7.1 square miles (18.4 km2) is land and 0.12 square miles (0.3 km2), or 1.52%, is water.
The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Glenn Dale has a humid subtropical climate, abbreviated "Cfa" on climate maps.
As delineated by the U.S. Census Bureau, Glenn Dale is bordered by:
The northern boundary of the CDP is formed by Good Luck Road and Duckettown Road. The eastern boundary is formed with the city boundary of Bowie, then by Chestnut Avenue and High Bridge Road, then again by the boundary of Bowie. The southern boundary of Glenn Dale is formed by Annapolis Road (Maryland Route 450), and the western boundary follows the stream called Folly Branch, then Lanham-Severn Road (Maryland Route 564), then Greenbelt Road (Route 193), returning to Good Luck Road.
As of the census of 2000, there were 12,609 people, 4,086 households, and 3,305 families residing in the CDP. The population density was 1,710.0 people per square mile (660.6/km2). There were 4,165 housing units at an average density of 564.9/sq mi (218.2/km2). The racial makeup of the CDP was 40.38% White, 48.09% African American, 0.25% Native American, 7.80% Asian, 0.03% Pacific Islander, 0.92% from other races, and 2.52% from two or more races. Hispanic or Latino people of any race were 2.41% of the population.