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Triangle, Virginia

Census designated place in Prince William County, Virginia · ZIP 22172

  • Prince William County
  • Census data · ACS 2019-2023
  • 2 public schools
Join TriangleAsk TriangleBusinessesPeople
  • 11,265 (2019-2023 estimate)Population
  • 3,433Households
  • $114,837Median household income
  • $520,400Median home value
  • 2Public schools
  • 1ZIP codes

About Triangle

This page shows only what has been published about Triangle: Census facts with their sources first, then its businesses, jobs, events, people in public roles, housing and questions as they are added. Nothing here is written by the town government.

Town intelligenceOfficial sources, refreshed yearly

Population, 2000 to 2020+74.3%
4k6k8k10k2000: 5,50020002010: 8,18820102020: 9,58920205,5009,589
Population of Triangle at each census
CensusPopulation
20005,500
20108,188
20209,589

As counted at each census, within the boundaries the area had then; the current estimate is in the glance card.

Sources: Census 2000 Summary File 1: total population, place level, state 51, retrieved November 14, 2026; Census 2010 Summary File 1: total population, place level, state 51, retrieved November 14, 2026; Census 2020 Redistricting Data (P.L. 94-171): total population, place level, state 51, retrieved November 14, 2026.

Household income in Triangle
Under $50k20.3%
$50k to $100k23.6%
$100k to $150k19.5%
$150k to $200k14.5%
$200k and over22%

Median household income $114,837 · Share of households by income, American Community Survey 5-year 2019-2023, table S1901.

Source: American Community Survey 5-year subject table S1901 (household income) 2019–2023, place level, state 51, retrieved November 14, 2026.

Housing tenure in Triangle
Owner occupied
2,175 units
Renter occupied
1,258 units
Vacancy rate
4.2%

Occupied housing units by tenure and the share of all units vacant, American Community Survey 5-year 2019-2023, table DP04.

Source: American Community Survey 5-year data profile 2019–2023, place level, state 51, retrieved November 14, 2026.

Triangle compared with its county and state
Triangle compared with its county and state, American Community Survey 2019-2023
MeasureTrianglePrince William CountyVirginia
Population11,265484,6258,657,499
Median household income$114,837$128,873$90,974
Median age35.536.038.8
Median home value$520,400$500,600$360,700
Bachelor’s degree or higher42.4%44.5%41.5%
Foreign-born residents25.7%26.2%12.9%
Owner-occupied homes63.4%74.4%67.2%
Mean commute to work36.3 minutes37.5 minutes27.6 minutes

Source: American Community Survey 5-year data profile 2019–2023, place level, state 51, retrieved November 14, 2026.

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Schools

Public schools in Triangle2
Public schools in Triangle, NCES directory 2023–2024
SchoolTypeGradesDistrict
Triangle ElementaryPublicPre-K–5Prince William County Public Schools
Graham Park MiddlePublic6–8Prince William County Public Schools

Open public schools in the NCES directory for 2023–2024, placed by their listed location; private schools are not in the source. Enrollment and ratings are not shown.

Sources: NCES Common Core of Data, public school directory 2023–2024, retrieved November 14, 2026; NCES EDGE public school geocodes 2024–2025, retrieved November 14, 2026.

Frequently asked about TrianglePromoted from questions people asked

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Nearby towns

Other towns in Prince William County

All towns in Prince William County