ZIP code 99371 is in Washtucna (61% of residents), in Adams County (95%) and Franklin County (4.6%), Washington. 39% of its residents live outside city limits. It is in Washington's 5th congressional district. Its state senate districts are Legislative (Senate) District 9 (95%) and Legislative (Senate) District 16 (4.6%); its state house districts are Legislative (House) District 9 (95%) and Legislative (House) District 16 (4.6%).
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).
4 voting precincts overlap ZIP 99371.
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:
related_geographies(id="us:zcta:99371")
ZIP 99371 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.