ZIP code 20147 is in Ashburn (70% of residents), Belmont (15%), University Center (6.0%), One Loudoun (3.4%), Goose Creek Village (3.0%) and Broadlands (1.1%), in Loudoun County, Virginia. It is in Virginia's 10th congressional district. Its state senate districts are State Senate District 32 (83%) and State Senate District 31 (17%); its state house districts are House of Delegates District 28 (86%) and House of Delegates District 29 (14%).
21 voting precincts overlap ZIP 20147.
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:20147")
ZIP 20147 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.