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| City | Triangle |
| State | Virginia (VA) |
| County | Prince William |
| Country | United States of America |
| Timezone | Eastern Time (America/New_York) |
| Latitude | 38.546788 |
| Longitude | -77.336649 |
| Population | 10,450 |
| Density | 1545.0 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 22172 |
| Area Code | 703, 571 |
| County Seat | Manassas |
| School District | Prince William County Public Schools |
Triangle is a locality in Prince William County, Virginia, United States. It has a population of 10,450. The population density is 1545.0 people per km². Triangle is located at 38.5468°N, 77.3366°W. It observes the Eastern Time (America/New_York) timezone. ZIP code: 22172.
Triangle unfolds across a landscape shaped by the gentle ebb and flow of Virginia's Piedmont terrain, where broad, open fields give way to stands of mature oak and pine. It lies 4.1 miles west-south-west of Cherry Hill, VA (from Cherry Hill, VA: bearing 247°T), and is situated 6.4 miles south-south-west of Dale City. The air here, especially in the late afternoon, carries a faint, earthy scent, a blend of sun-warmed soil and distant pine needles. Roads wind with a quiet deliberateness, tracing the contours of the land as if recalling ancient pathways. The sky above Triangle often displays a soft, diffused light, particularly when clouds drift in from the west, casting a muted glow over the scattered homes and the occasional glint of a distant water tower. The rhythm of life here is one of steady progression, a slow unfolding of days where the changing seasons are marked not by grand pronouncements but by subtle shifts in the foliage and the angle of the sun. The history of Triangle is entwined with the broader narrative of Prince William County, a region that has witnessed centuries of human endeavor, from early settlements to its present-day character. Its economy, once more agrarian, now reflects a diversified approach, with residents finding work in a range of industries and services that extend beyond its immediate borders, yet the echoes of its agricultural past are still visible in the open farmland that punctuates the residential areas. The proximity to Quantico Marine Corps Base has undeniably shaped Triangle, bringing a unique dynamism and a constant undercurrent of national significance to the local life. This strategic location has fostered a distinct cultural blend, where the enduring traditions of rural Virginia coexist with the modern influences brought by military families and the broader economic currents of Northern Virginia.
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This page provides an embedded street and satellite map of Triangle, Virginia — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 38.546788, -77.336649. Live weather conditions are sourced directly from the National Weather Service, with current observations and a 7-day forecast also powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while a Wikipedia summary or an editorially written description provides background on Triangle and Prince William County.
Detailed location data for Triangle includes the ZIP code (22172), telephone area code (703, 571), county seat of Prince William County (Manassas), and school district assignment (Prince William County Public Schools). These are among the most commonly searched location details for any US city or town.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity — ensuring the correct Triangle is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.
| Page generated | July 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. Location verified by proximity — not name matching alone. |