Boundary Atlas

ZIP code 59859: Plains, MT

ZIP code 59859 is in Plains (30% of residents) and Weeksville (2.2%), in Sanders County, Montana. 68% of its residents live outside city limits. It is in Montana's 1st congressional district. Its state senate districts are State Senate District 7 (78%), State Senate District 45 (17%) and State Senate District 46 (4.6%); its state house districts are State House District 14 (78%), State House District 90 (17%) and State House District 91 (4.6%).

3,683residents (2020 Census)
710.8 sq miland area
2cities and towns
1congressional district
6voting precincts

See it on the mapAll of Montana

City and county

City or townShare of ZIP residents
Plains30%
Weeksville2.2%

CountyShare of ZIP residents
Sanders County100%

Town or county subdivisionShare of ZIP residents
Plains CCD95%
Flathead Reservation CCD5.0%

Congressional district

Congressional districtShare of ZIP residents
Montana's 1st congressional district (MT-01)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MT-01)Ryan K. Zinke (R)202-225-5628100%
U.S. SenatorSteve Daines (R)202-224-2651 · contact formstatewide
U.S. SenatorTim Sheehy (R)202-224-2644statewide
State Senator (State Senate District 7)Greg Hertz (R)78%
State Senator (State Senate District 45)Denley Loge (R)406-544-522017%
State Senator (State Senate District 46)Jacinda Morigeau (Democratic)406-298-34164.6%
State Representative (State House District 14)Paul Fielder (R)78%
State Representative (State House District 90)Curt Cochran (R)406-280-008117%
State Representative (State House District 91)Shelly Fyant (Democratic)406-546-56334.6%

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 778%
State Senate District 4517%
State Senate District 464.6%

State house districtShare of ZIP residents
State House District 1478%
State House District 9017%
State House District 914.6%

Voting precincts

6 voting precincts overlap ZIP 59859. Map them, with each precinct's share of the ZIP's residents.

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ZIP 59859 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.