Overview
- District ID
- mt-sd-040
- State
- Montana
- Chamber
- Upper chamber (state senate)
- District Code
- 040
- Land Area
- 173.3 sq mi
- Water Area
- 0.3 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 2 counties
Places
Showing all 6 places
Overlapping Congressional Districts
| Congressional district | Population in both | Share of this district's population | Share of the congressional district's population | Share of this district's land |
|---|
| MT District 2 | 21,827 | 100.0% | 4.0% | 100.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 15,444
- Active Voters
- 13,308 (86.2%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2023–2024 | 12,431 (80.5%) | 0 (0.0%) | 0 (0.0%) |
| 2021–2022 | 11,310 (73.2%) | 0 (0.0%) | 0 (0.0%) |
| 2019–2020 | 12,258 (79.4%) | 0 (0.0%) | 0 (0.0%) |
| 2017–2018 | 10,578 (68.5%) | 0 (0.0%) | 0 (0.0%) |
| 2015–2016 | 9,465 (61.3%) | 0 (0.0%) | 0 (0.0%) |
| 2013–2014 | 8,426 (54.6%) | 0 (0.0%) | 0 (0.0%) |
| 2011–2012 | 7,885 (51.1%) | 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
- 22,588 (± 1,045)
- Median Age
- 38.9
- Median Household Income
- $77,661 (± $3,963)
- High School Graduate or Higher (age 25+)
- 95.4%
- Bachelor's Degree or Higher (age 25+)
- 47.7%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 4,769 | 21.1% |
| 18 to 64 | 13,683 | 60.6% |
| 65 and over | 4,136 | 18.3% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 864 | 3.8% |
| White, not Hispanic | 20,068 | 88.8% |
| Black, not Hispanic | 83 | 0.4% |
| Asian, not Hispanic | 133 | 0.6% |
| American Indian / Alaska Native, not Hispanic | 281 | 1.2% |
| Native Hawaiian / Pacific Islander, not Hispanic | 0 | 0.0% |
| Some other race, not Hispanic | 100 | 0.4% |
| Two or more races, not Hispanic | 1,059 | 4.7% |
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
- 22,480
- Citizen Voting Age Population (CVAP)
- 17,751
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 21,615 | 96.2% |
| Hispanic | 864 | 3.8% |
| White | 20,448 | 91.0% |
| Black | 99 | 0.4% |
| Asian | 76 | 0.3% |
| American Indian / Alaska Native | 278 | 1.2% |
| Native Hawaiian / Pacific Islander | 2 | 0.0% |
| Two or More Races | 20 | 0.1% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 17,164 | 96.7% |
| Hispanic | 585 | 3.3% |
| White | 16,371 | 92.2% |
| Black | 123 | 0.7% |
| Asian | 120 | 0.7% |
| American Indian / Alaska Native | 534 | 3.0% |
| Native Hawaiian / Pacific Islander | 1 | 0.0% |
| Two or More Races | 18 | 0.1% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
