Montana State Senate District 9

State Legislative District Profile (Upper Chamber)

Overview

District ID
mt-sd-009
State
Montana
Chamber
Upper chamber (state senate)
District Code
009
Land Area
8,267.4 sq mi
Water Area
85.3 sq mi

Boundary

Boundary of Montana State Senate District 9

Boundary as GeoJSON

Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.

Counties

CountyOverlapShare of district landShare of county land
Lewis and Clark County2738.27 sq mi33.1%79.2%
Teton County2271.62 sq mi27.5%100.0%
Toole County1914.86 sq mi23.2%100.0%
Pondera County1342.66 sq mi16.2%82.6%

Showing all 4 counties

Places

PlaceOverlapShare of district landShare of place land
Lincoln CDP17.55 sq mi0.2%100.0%
Helena Valley Northwest CDP13.44 sq mi0.2%82.1%
Shelby city5.78 sq mi0.1%100.0%
Dupuyer CDP4.65 sq mi0.1%100.0%
New Rockport Colony CDP3.51 sq mi<0.1%100.0%
Brady CDP3.09 sq mi<0.1%100.0%
Sunburst town1.92 sq mi<0.1%100.0%
Bynum CDP1.63 sq mi<0.1%100.0%
Power CDP1.50 sq mi<0.1%100.0%
Choteau city1.46 sq mi<0.1%100.0%
Conrad city1.27 sq mi<0.1%100.0%
Augusta CDP0.92 sq mi<0.1%100.0%
Valier town0.87 sq mi<0.1%100.0%
Gilman CDP0.65 sq mi<0.1%100.0%
Midway Colony CDP0.53 sq mi<0.1%100.0%
Marysville CDP0.50 sq mi<0.1%99.9%
Sweet Grass CDP0.48 sq mi<0.1%100.0%
Birch Creek Colony CDP0.48 sq mi<0.1%99.9%
Milford Colony CDP0.44 sq mi<0.1%99.9%
Kingsbury Colony CDP0.38 sq mi<0.1%99.9%
New Miami Colony CDP0.38 sq mi<0.1%100.0%
Camrose Colony CDP0.37 sq mi<0.1%100.0%
Miller Colony CDP0.37 sq mi<0.1%100.0%
Kevin town0.36 sq mi<0.1%100.0%
Hillside Colony CDP0.33 sq mi<0.1%100.0%

Showing top 25 of 33 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
MT District 220,84192.9%3.8%94.0%
MT District 11,5977.1%0.3%6.0%

Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).

Voters

Registered Voters
15,101
Active Voters
13,245 (87.7%)

Party Registration

This state's voter file does not record party registration.

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2023–202412,267 (81.2%)0 (0.0%)0 (0.0%)
2021–202210,375 (68.7%)0 (0.0%)0 (0.0%)
2019–202011,958 (79.2%)0 (0.0%)0 (0.0%)
2017–201810,011 (66.3%)0 (0.0%)0 (0.0%)
2015–20169,197 (60.9%)0 (0.0%)0 (0.0%)
2013–20147,781 (51.5%)0 (0.0%)0 (0.0%)
2011–20127,655 (50.7%)0 (0.0%)0 (0.0%)

Turnout counts today's registered voters with a counted ballot in the cycle's elections (the odd and even year), as a share of today's registered voters. Voters who have since left the rolls are not counted.

Browse the voter list for this district (premium access; sign-in required)

Source: Civitech voter file snapshot as of 09/10/2025. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Population
22,569 (± 813)
Median Age
44.5
Median Household Income
$66,443 (± $3,564)
High School Graduate or Higher (age 25+)
90.1%
Bachelor's Degree or Higher (age 25+)
26.5%

Population by Age

GroupPeopleShare
Under 184,95822.0%
18 to 6412,48455.3%
65 and over5,12722.7%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)6452.9%
White, not Hispanic19,88488.1%
Black, not Hispanic1020.5%
Asian, not Hispanic1250.6%
American Indian / Alaska Native, not Hispanic7093.1%
Native Hawaiian / Pacific Islander, not Hispanic00.0%
Some other race, not Hispanic1840.8%
Two or more races, not Hispanic9204.1%

Source: U.S. Census Bureau, American Community Survey 2020-2024 ACS 5-year estimates (tables B01001, B01002, B01003, B03002, B15003, B19013) for this state legislative district. Estimates are survey-based; ± figures are 90% margins of error.

Citizen Voting Age Population

Total Citizen Population
22,390
Citizen Voting Age Population (CVAP)
17,448

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic21,80497.4%
Hispanic5842.6%
White20,23690.4%
Black1100.5%
Asian1080.5%
American Indian / Alaska Native7113.2%
Native Hawaiian / Pacific Islander20.0%
Two or More Races780.3%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic17,06497.8%
Hispanic3902.2%
White15,90491.2%
Black1300.7%
Asian980.6%
American Indian / Alaska Native8805.0%
Native Hawaiian / Pacific Islander00.0%
Two or More Races710.4%

Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).