Overview
- District ID
- mt-hd-031
- State
- Montana
- Chamber
- Lower chamber
- District Code
- 031
- Land Area
- 3,322.3 sq mi
- Water Area
- 181.8 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 4 counties
Places
Showing all 8 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 | 10,301 | 100.0% | 1.9% | 100.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 4,830
- Active Voters
- 3,921 (81.2%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2023–2024 | 3,162 (65.5%) | 0 (0.0%) | 0 (0.0%) |
| 2021–2022 | 1,982 (41.0%) | 0 (0.0%) | 0 (0.0%) |
| 2019–2020 | 3,399 (70.4%) | 0 (0.0%) | 0 (0.0%) |
| 2017–2018 | 2,500 (51.8%) | 0 (0.0%) | 0 (0.0%) |
| 2015–2016 | 2,354 (48.7%) | 0 (0.0%) | 0 (0.0%) |
| 2013–2014 | 1,775 (36.7%) | 0 (0.0%) | 0 (0.0%) |
| 2011–2012 | 1,905 (39.4%) | 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
- 9,892 (± 377)
- Median Age
- 31.7
- Median Household Income
- $53,108 (± $4,214)
- High School Graduate or Higher (age 25+)
- 90.4%
- Bachelor's Degree or Higher (age 25+)
- 17.4%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 3,096 | 31.3% |
| 18 to 64 | 5,411 | 54.7% |
| 65 and over | 1,385 | 14.0% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 325 | 3.3% |
| White, not Hispanic | 2,347 | 23.7% |
| Black, not Hispanic | 3 | 0.0% |
| Asian, not Hispanic | 83 | 0.8% |
| American Indian / Alaska Native, not Hispanic | 6,437 | 65.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 1 | 0.0% |
| Some other race, not Hispanic | 23 | 0.2% |
| Two or more races, not Hispanic | 673 | 6.8% |
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
- 9,807
- Citizen Voting Age Population (CVAP)
- 6,709
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 9,514 | 97.0% |
| Hispanic | 295 | 3.0% |
| White | 2,453 | 25.0% |
| Black | 3 | 0.0% |
| Asian | 45 | 0.5% |
| American Indian / Alaska Native | 6,434 | 65.6% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 85 | 0.9% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 6,581 | 98.1% |
| Hispanic | 125 | 1.9% |
| White | 2,103 | 31.3% |
| Black | 15 | 0.2% |
| Asian | 22 | 0.3% |
| American Indian / Alaska Native | 4,409 | 65.7% |
| Native Hawaiian / Pacific Islander | 1 | 0.0% |
| Two or More Races | 30 | 0.4% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
