ZIP code 59639 is in Lincoln (81% of residents), in Lewis and Clark County, Montana. 19% of its residents live outside city limits. It is in Montana's 2nd congressional district. Its state senate districts are State Senate District 9 (98%) and State Senate District 38 (1.8%); its state house districts are State House District 17 (98%) and State House District 76 (1.8%).
2 voting precincts overlap ZIP 59639.
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:59639")
ZIP 59639 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.