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Triangle Virginia Last Updated: 10/03/2025 |
| Triangle is a census-designated place in southeastern Prince William County, Virginia. The population was 9,589 at the 2020 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. | |
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National Museum of the Marine Corps Place » Museum The National Museum of the Marine Corps is the historical museum of the United States Marine Corps. Located in Triangle, Virginia near Marine Corps Base Quantico, the museum opened on November 10, 2006, and is now one of the top tourist attractions in the state, drawing over 500,000 people annually. 322 views 💖 1 👍 018900 Jefferson Davis Hwy, Triangle, VA 22172 |