Boundary Atlas

ZIP code 59635: Helena Valley Southeast, MT

ZIP code 59635 is in Helena Valley Southeast (56% of residents), East Helena (25%), Spokane Creek (5.3%) and Montana City (1.7%), in Lewis and Clark County (92%), Broadwater County (5.3%) and Jefferson County (2.2%), Montana. 12% of its residents live outside city limits. It is in Montana's 2nd congressional district. Its state senate districts are State Senate District 42 (86%), State Senate District 41 (6.8%), State Senate District 39 (5.3%) and State Senate District 38 (2.2%); its state house districts are State House District 83 (50%), State House District 84 (36%), State House District 82 (6.8%), State House District 77 (5.3%) and State House District 75 (2.2%).

7,738residents (2020 Census)
79.5 sq miland area
4cities and towns
1congressional district
9voting precincts

See it on the mapAll of Montana

City and county

City or townShare of ZIP residents
Helena Valley Southeast56%
East Helena25%
Spokane Creek5.3%
Montana City1.7%

CountyShare of ZIP residents
Lewis and Clark County92%
Broadwater County5.3%
Jefferson County2.2%

Town or county subdivisionShare of ZIP residents
Helena CCD92%
Townsend West CCD5.3%
Boulder CCD2.2%

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 42)Mary Ann Dunwell (Democratic)406-461-535886%
State Senator (State Senate District 41)Janet Ellis (Democratic)6.8%
State Senator (State Senate District 39)Wylie Galt (R)5.3%
State Senator (State Senate District 38)Becky Beard (R)2.2%
State Representative (State House District 83)Jill Cohenour (Democratic)406-431-091250%
State Representative (State House District 84)Julie Darling (R)36%
State Representative (State House District 82)Pete Elverum (Democratic)6.8%
State Representative (State House District 77)Jane Gillette (R)406-868-15495.3%
State Representative (State House District 75)Mark Reinschmidt (R)2.2%

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 4286%
State Senate District 416.8%
State Senate District 395.3%
State Senate District 382.2%

State house districtShare of ZIP residents
State House District 8350%
State House District 8436%
State House District 826.8%
State House District 775.3%
State House District 752.2%

Voting precincts

9 voting precincts overlap ZIP 59635. 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:59635")

ZIP 59635 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.