ZIP code 22172: Triangle, VA

ZIP code 22172 is in Triangle (90% of residents) and Dumfries (7.6%), in Prince William County, Virginia. It is in Virginia's 7th congressional district. Its state senate district is State Senate District 29; its state house district is House of Delegates District 23.

10,679residents (2020 Census)

20.6 sq miland area

2cities and towns

1congressional district

5voting precincts

See it on the map All of Virginia

City and county

City or town	Share of ZIP residents
Triangle	90%
Dumfries	7.6%

County	Share of ZIP residents
Prince William County	100%

Town or county subdivision	Share of ZIP residents
Potomac district	100%

Congressional district

Congressional district	Share of ZIP residents
Virginia's 7th congressional district (VA-07)	100%

Elected officials

Office	Member	Contact	Share of residents
U.S. Representative (VA-07)	Eugene Simon Vindman (D)	202-225-2815	100%
U.S. Senator	Mark R. Warner (D)	202-224-2023 · contact form	statewide
U.S. Senator	Tim Kaine (D)	202-224-4024 · contact form	statewide
State Senator (State Senate District 29)	Jeremy McPike (Democratic)		100%
Delegate (State House District 23)	Margaret Franklin (Democratic)		100%

Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).

Local government

Triangle laws: search for the Triangle, Virginia code of ordinances
Dumfries website: http://www.dumfriesva.gov/
Dumfries laws: search for the Dumfries, Virginia code of ordinances
Prince William County website: http://www.pwcgov.org/
Prince William County laws: search for the Prince William County, Virginia code of ordinances

State legislative districts

State senate district	Share of ZIP residents
State Senate District 29	100%

State house district	Share of ZIP residents
House of Delegates District 23	100%

Voting precincts

5 voting precincts overlap ZIP 22172. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

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ZIP 22172 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.