ZIP code 98103 is in Seattle, in King County, Washington. It is in Washington's 7th congressional district. Its state senate districts are Legislative (Senate) District 46 (39%), Legislative (Senate) District 43 (35%) and Legislative (Senate) District 36 (26%); its state house districts are Legislative (House) District 46 (39%), Legislative (House) District 43 (35%) and Legislative (House) District 36 (26%).
93 voting precincts overlap ZIP 98103.
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:98103")
ZIP 98103 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.