ZIP code 98903 is in Union Gap (38% of residents), Yakima (29%), Ahtanum (18%) and Tampico (2.7%), in Yakima County, Washington. 13% of its residents live outside city limits. It is in Washington's 4th congressional district. Its state senate districts are Legislative (Senate) District 15 (53%) and Legislative (Senate) District 14 (47%); its state house districts are Legislative (House) District 15 (53%) and Legislative (House) District 14 (47%).
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).
27 voting precincts overlap ZIP 98903.
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:98903")
ZIP 98903 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.