The story so far
from Wikipedia & the U.S. CensusTriangle is a census-designated place (CDP) in southeastern Prince William County, Virginia, United States. 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.
Between the 2010 and 2020 censuses its population grew from 8,188 to 9,589 (+17%). Half of its homes were built before 1998.
Wikipedia doesn’t have a history of Triangle yet — the old photos, dates and memories neighbors add here are how it gets written.
Intro from Wikipedia, licensed CC BY-SA 4.0. Population and housing: U.S. Census Bureau.
Start Triangle’s collection
The first neighbors to add old photos shape how Triangle’s history is told.
0 of 10 decades since 1900 have photos 📦Share a family photoSign in to add one+10Triangle, decade by decade
2000
Then & now
When neighbors add old photos, retakes from the same spot appear here side by side.
Stories next door
nearby towns’ historyFrom Wikimedia Commons (6). Images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.





