Overview
- District ID
- mt-sd-021
- State
- Montana
- Chamber
- Upper chamber (state senate)
- District Code
- 021
- Land Area
- 5,450.9 sq mi
- Water Area
- 16 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 3 counties
Places
Showing all 14 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 | 20,560 | 100.0% | 3.8% | 100.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 11,327
- Active Voters
- 8,831 (78.0%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2023–2024 | 7,015 (61.9%) | 0 (0.0%) | 0 (0.0%) |
| 2021–2022 | 5,881 (51.9%) | 0 (0.0%) | 0 (0.0%) |
| 2019–2020 | 8,292 (73.2%) | 0 (0.0%) | 0 (0.0%) |
| 2017–2018 | 6,856 (60.5%) | 0 (0.0%) | 0 (0.0%) |
| 2015–2016 | 5,661 (50.0%) | 0 (0.0%) | 0 (0.0%) |
| 2013–2014 | 4,723 (41.7%) | 0 (0.0%) | 0 (0.0%) |
| 2011–2012 | 4,830 (42.6%) | 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
- 19,806 (± 685)
- Median Age
- 34.3
- Median Household Income
- $58,100 (± $2,271)
- High School Graduate or Higher (age 25+)
- 88.8%
- Bachelor's Degree or Higher (age 25+)
- 18.4%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 5,659 | 28.6% |
| 18 to 64 | 11,273 | 56.9% |
| 65 and over | 2,874 | 14.5% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 815 | 4.1% |
| White, not Hispanic | 6,804 | 34.4% |
| Black, not Hispanic | 201 | 1.0% |
| Asian, not Hispanic | 80 | 0.4% |
| American Indian / Alaska Native, not Hispanic | 11,382 | 57.5% |
| Native Hawaiian / Pacific Islander, not Hispanic | 1 | 0.0% |
| Some other race, not Hispanic | 34 | 0.2% |
| Two or more races, not Hispanic | 489 | 2.5% |
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
- 19,687
- Citizen Voting Age Population (CVAP)
- 14,028
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 18,908 | 96.0% |
| Hispanic | 778 | 4.0% |
| White | 6,909 | 35.1% |
| Black | 203 | 1.0% |
| Asian | 26 | 0.1% |
| American Indian / Alaska Native | 11,388 | 57.8% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 75 | 0.4% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 13,444 | 95.8% |
| Hispanic | 586 | 4.2% |
| White | 5,855 | 41.7% |
| Black | 219 | 1.6% |
| Asian | 29 | 0.2% |
| American Indian / Alaska Native | 7,324 | 52.2% |
| Native Hawaiian / Pacific Islander | 1 | 0.0% |
| Two or More Races | 59 | 0.4% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
