Boundary Atlas

ZIP code 59401: Great Falls, MT

ZIP code 59401 is in Great Falls, in Cascade County, Montana. It is in Montana's 2nd congressional district. Its state senate district is State Senate District 10; its state house districts are State House District 20 (56%) and State House District 19 (44%).

13,030residents (2020 Census)
3.0 sq miland area
1cities and towns
1congressional district
4voting precincts

See it on the mapAll of Montana

City and county

City or townShare of ZIP residents
Great Falls100%

CountyShare of ZIP residents
Cascade County100%

Town or county subdivisionShare of ZIP residents
Great Falls CCD100%

Congressional district

Congressional districtShare of ZIP residents
Montana's 2nd congressional district (MT-02)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MT-02)Troy Downing (R)202-225-3211100%
U.S. SenatorSteve Daines (R)202-224-2651 · contact formstatewide
U.S. SenatorTim Sheehy (R)202-224-2644statewide
State Senator (State Senate District 10)Jeremy Trebas (R)100%
State Representative (State House District 20)Melissa Nikolakakos (R)406-223-238056%
State Representative (State House District 19)Jane Weber (Democratic)44%

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).

Local government

State legislative districts

State senate districtShare of ZIP residents
State Senate District 10100%

State house districtShare of ZIP residents
State House District 2056%
State House District 1944%

Voting precincts

4 voting precincts overlap ZIP 59401. 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:

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ZIP 59401 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.