90 years in pictures
Census counts: 2,948 in 1960, 9,589 in 2020. The archive holds 26 old photos and papers going back to 2005 and 7 maps from 1927 on.
- 1936Triangle is settled
Each edition grades its towns against each other only.
Triangle is a solid, middle-of-the-road choice. It grades B overall, 161st among Virginia's 249 graded towns, with no subject far below average. Its best mark is incomes: the median household earns $110K. Expect to pay for it: the typical home is worth about $567K, 4.5 years of the Washington metro’s $127K median household income. Triangle’s average trip to work is 39 minutes, against 27 minutes in Virginia’s towns and 25 minutes across U.S. towns. The biggest park or preserve is Fuller Heights Park, at 42 acres.
Where Triangle beats most towns.
8,188 counted in 2010 and 9,589 in 2020.
U.S. Census 2010 & 2020 counts
Each subject compared with towns across the country (schools within Virginia), ordered by how far Triangle is from typical.
How TownRatings grades towns →
Census counts: 2,948 in 1960, 9,589 in 2020. The archive holds 26 old photos and papers going back to 2005 and 7 maps from 1927 on.
Museums, parks, gardens and other places to visit around Triangle. Close and well known come first.
Big draw29 mi National park siteWhite House311K visitors a year
Big draw28 mi National MemorialWashington Monument204K visitors a year
Big draw27 mi LandmarkArlington National Cemetery
Big draw27 mi LandmarkUnited States Triumphal Arch
Big draw28 mi MuseumSmithsonian Institution30.0M visitors a year
Big draw28 mi National MemorialLincoln Memorial7.7M visitors a yearWhite House: This image or media was taken or created by Matt H. Wade. To see his entire port, CC BY-SA 3.0 · Washington Monument: Oren Rozen, CC BY-SA 4.0 · Arlington National Cemetery: Protoant, Public domain · United States Triumphal Arch: Hstoops, CC0 · Smithsonian Institution: Highsmith, Carol M., 1946-, photographer, Public domain · Lincoln Memorial: Aerial_view_of_Lincoln_Memorial_-_east_side.jpg: Carol M. Highsmith derivative w, Public domain
Triangle is unincorporated, so Prince William County and regional agencies provide most services.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Sep 30, 2026.
Ordered by what stands out in Triangle.
Triangle sends most of its workers to Washington and beyond and owes part of its health edge to its incomes, but it has property taxes 1.7 times the Virginia norm.
Expected storm and flood damage is lower than in 84% of U.S. communities. Since 1996, 2 flood insurance claims have been paid out in Triangle.
FEMA flood insurance claims · FEMA National Risk Index · OpenFEMA
Its public schools are run by the Prince William County Public Schools. Two of its 5 schools are below, each with why it’s listed.
| School | Level | Students | Letter |
|---|---|---|---|
| Triangle ElementaryLargest public elementary schoolGrades PK–5 | Grades PK–5 | 795 | C |
| Calvary Christian School PrivateLargest high schoolGrades K–11 | Grades K–11 | 90 | – |
NCES · EDFacts · graded within VA on state tests and graduation
The median property tax bill is $4,840, against $2,790 across Virginia, another input to its cost-of-living grade.
The typical Triangle home is worth about $567,000, up 0.5% in a year, 37% above the Virginia typical home. The median rent in Triangle is $1,554 a month.
| Triangle | Virginia towns | U.S. towns | |
|---|---|---|---|
| Households that own their home | 63% | 68% | 73% |
| Median rent | $1,554 a month | $1,764 a month | $1,185 a month |
Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center
Triangle has 525 jobs for its 3,896 working residents: even if every job went to a resident, most would still commute out. The average commute takes 38.7 minutes, against 27.3 across Virginia.
Most working residents leave Triangle for work: only 1% work in town. Jobs based in Triangle grew to 525 in 2023, 175 more than in 2013. The top destinations are Washington (9%), Arlington (5%) and Alexandria (4%).
| Triangle | Virginia towns | U.S. towns | |
|---|---|---|---|
| Median household income | $110,000 | $101,000 | $80,000 |
| Working residents who work in town | 0.8% | 5% | 8% |
| Work from home | 13% | 18% | 11% |
| Below the poverty line | 7.6% | 7.7% | 9.6% |
Census LEHD 2023 · ACS
People 65 and older are 8% of residents (17% statewide); children under 18 are 27% of residents (22% statewide). Triangle’s median age is 35.6 years. 41% of adults 25 and older have a bachelor’s degree or more, vs 42% across Virginia.
| Triangle | Virginia towns | U.S. towns | |
|---|---|---|---|
| Aged 65 or older | 7.8% | 16% | 18% |
| Under 18 | 27% | 23% | 22% |
| Median age | 35.6 years | 38.5 years | 40.5 years |
| Bachelor’s degree or more, 25+ | 41% | 44% | 29% |
48% women, 52% men
About 110 men for every 100 women (the survey’s margin: ±2.2 points). Across Virginia, 50.6% of residents are women.
| Triangle | VA | U.S. | |
|---|---|---|---|
| Under 10 | 14.4% | 11.6% | 11.6% |
| 10 to 17 | 12.3% | 10.1% | 10.3% |
| 18 to 24 | 9.4% | 9.3% | 9.1% |
| 25 to 34 | 12.9% | 13.5% | 13.7% |
| 35 to 44 | 15.9% | 13.6% | 13.2% |
| 45 to 54 | 13.8% | 12.5% | 12.2% |
| 55 to 64 | 13.6% | 12.8% | 12.7% |
| 65 to 74 | 5% | 9.9% | 10.2% |
| 75 and older | 2.8% | 6.8% | 7% |
| No diploma | 6.9% | 8.4% | 10.4% |
| High school | 18.6% | 23.9% | 26% |
| Some college | 23.7% | 17.7% | 19.1% |
| Associate’s | 10% | 7.8% | 8.8% |
| Bachelor’s | 25.2% | 23.7% | 21.6% |
| Graduate | 15.6% | 18.5% | 14.1% |
U.S. Census Bureau · ACS 2020-2024 5-year estimates
Triangle has chilly winters and warm summers. July afternoons reach 88°, January nights drop to 27° and about 12 inches of snow falls in a winter.
NOAA U.S. Climate Normals, 1991–2020
| Triangle | Virginia towns | U.S. towns | |
|---|---|---|---|
| Miles of trail per square mile | 0.4 miles per square mile | 0.7 | 0.4 |
| Conserved land | 6.1% | 4.6% | 4.3% |
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Fuller Heights Park | — | 42 |
| 2. Bradys Hill Park | 0.1 mi | 1 |
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
Against the 7,191 U.S. towns with household incomes like Triangle’s, it is less healthy than 73%: its national edge comes with its incomes.
Triangle beats the Virginia average on 4 of 32 CDC measures and trails it on 7. 41% of adults sleep under 7 hours in Triangle.
| Triangle | Virginia towns | U.S. towns | |
|---|---|---|---|
| Sleep under 7 hours (CDC PLACES) | 41% | 36% | 36% |
| Feel lonely (CDC PLACES) | 36% | 34% | 33% |
| Food insecurity (CDC PLACES) | 18% | 12% | 14% |
| Obesity (CDC PLACES) | 38% | 34% | 35% |
| What stands out | Triangle | VA |
|---|---|---|
| Fewer adults who have had cancer | 5% | 7.7% |
| Fewer adults with heart disease | 4.6% | 6.1% |
| More adults facing housing insecurity | 16% | 10.9% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
None within 15 miles of Triangle; the nearest are
About 8 of every 100 Triangle residents are enrolled in college, about the same as Virginia.
Where Triangle’s working residents go each day. Line width shows the share.
Census LEHD 2023
Census-designated place in Virginia, United States
Triangle 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.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
3 towns share a border with Triangle.
| Town | VA rank | Overall | Cost | Safety | Schools | Health |
|---|---|---|---|---|---|---|
| Triangle | #161 | B | C | — | B | B |
| Dumfries | #128 | B+ | B | B− | B | C |
| Quantico Base | — | — | D− | — | — | A− |
| Cherry Hill | #125 | B+ | C | — | B | B+ |
Triangle, Quantico Base and Cherry Hill report no FBI crime data of their own. Quantico Base isn’t graded (fewer than 1,000 residents, or not enough data). Compare Triangle with a neighbor →
Short answers, built from the data on this page.
By most measures, yes. Triangle grades B overall, better than 57% of U.S. towns and #161 of 249 in Virginia. It grades B for health and B for schools.
Cost of living, which also weighs rents, property taxes and how many households pay 30% or more of their income for housing, grades C.