Montana State Senate District 20

State Legislative District Profile (Upper Chamber)

Overview

District ID
mt-sd-020
State
Montana
Chamber
Upper chamber (state senate)
District Code
020
Land Area
75.3 sq mi
Water Area
1.51 sq mi

Boundary

Boundary of Montana State Senate District 20

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Yellowstone County75.28 sq mi100.0%2.9%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Lockwood CDP12.85 sq mi17.1%100.0%
Billings city1.95 sq mi2.6%4.2%
Huntley CDP0.05 sq mi0.1%3.6%

Showing all 3 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 221,472100.0%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
13,419
Active Voters
11,311 (84.3%)

Party Registration

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

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2023–202410,119 (75.4%)0 (0.0%)0 (0.0%)
2021–202210,623 (79.2%)0 (0.0%)0 (0.0%)
2019–202010,273 (76.6%)0 (0.0%)0 (0.0%)
2017–20188,714 (64.9%)0 (0.0%)0 (0.0%)
2015–20167,578 (56.5%)0 (0.0%)0 (0.0%)
2013–20146,460 (48.1%)0 (0.0%)0 (0.0%)
2011–20126,409 (47.8%)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
21,953 (± 1,677)
Median Age
38.1
Median Household Income
$79,007 (± $7,081)
High School Graduate or Higher (age 25+)
95.0%
Bachelor's Degree or Higher (age 25+)
23.4%

Population by Age

GroupPeopleShare
Under 185,43724.8%
18 to 6412,83858.5%
65 and over3,67816.8%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)1,2265.6%
White, not Hispanic18,57584.6%
Black, not Hispanic210.1%
Asian, not Hispanic220.1%
American Indian / Alaska Native, not Hispanic7953.6%
Native Hawaiian / Pacific Islander, not Hispanic100.0%
Some other race, not Hispanic120.1%
Two or more races, not Hispanic1,2925.9%

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
21,815
Citizen Voting Age Population (CVAP)
16,377

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic20,64094.6%
Hispanic1,1745.4%
White18,75386.0%
Black210.1%
Asian220.1%
American Indian / Alaska Native8073.7%
Native Hawaiian / Pacific Islander10.0%
Two or More Races750.3%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic15,74896.2%
Hispanic6253.8%
White14,78790.3%
Black720.4%
Asian480.3%
American Indian / Alaska Native8495.2%
Native Hawaiian / Pacific Islander00.0%
Two or More Races190.1%

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