ZIP code 97603 is in Altamont (65% of residents), Klamath Falls (15%) and Falcon Heights (2.2%), in Klamath County, Oregon. 18% of its residents live outside city limits. It is in Oregon's 2nd congressional district. Its state senate district is State Senate District 28; its state house districts are State House District 55 (75%) and State House District 56 (25%).
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).
21 voting precincts overlap ZIP 97603.
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:97603")
ZIP 97603 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.