Boundary Atlas

ZIP code 20190: Reston, VA

ZIP code 20190 is in Reston, in Fairfax County, Virginia. It is in Virginia's 11th congressional district. Its state senate district is State Senate District 38; its state house district is House of Delegates District 7.

20,957residents (2020 Census)
4.4 sq miland area
1cities and towns
1congressional district
5voting precincts

See it on the mapAll of Virginia

City and county

City or townShare of ZIP residents
Reston100%

CountyShare of ZIP residents
Fairfax County100%

Town or county subdivisionShare of ZIP residents
Hunter Mill district100%

Congressional district

Congressional districtShare of ZIP residents
Virginia's 11th congressional district (VA-11)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 38100%

State house districtShare of ZIP residents
House of Delegates District 7100%

Voting precincts

5 voting precincts overlap ZIP 20190. Map them, with each precinct's share of the ZIP's residents.

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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:

related_geographies(id="us:zcta:20190")

ZIP 20190 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.