Triangle, Virginia

Triangle, Virginia
Location of Triangle in Prince William County and the state of Virginia
Coordinates: 38°33′5″N 77°19′33″W / 38.55139°N 77.32583°W / 38.55139; -77.32583
CountryUnited States
StateVirginia
CountyPrince William
Area
  Total
2.6 sq mi (6.8 km2)
  Land2.6 sq mi (6.8 km2)
  Water0.0 sq mi (0.0 km2)
Elevation
98 ft (30 m)
Population
 (2010)
  Total
8,188
  Density3,100/sq mi (1,200/km2)
Time zoneUTC−5 (Eastern (EST))
  Summer (DST)UTC−4 (EDT)
ZIP Code
22172
Area code(s)571, 703
FIPS code51-79360
GNIS feature ID1500234

Triangle is a census-designated place (CDP) in southeastern Prince William County, Virginia, United States. The population was 8,188 at the 2010 census. It is bounded to the south by the Marine Corps Base Quantico, which surrounds the town of Quantico. Part of the National Capital Region, it is approximately 32 miles southwest of Washington, D.C.