Montana State House District 42

State Legislative District Profile (Lower Chamber)

Overview

District ID
mt-hd-042
State
Montana
Chamber
Lower chamber
District Code
042
Land Area
2,602.2 sq mi
Water Area
11.7 sq mi

Boundary

Boundary of Montana State House District 42

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Big Horn County2216.51 sq mi85.2%44.3%
Yellowstone County385.71 sq mi14.8%14.6%

Showing all 2 counties

Places

PlaceOverlapShare of district landShare of place land
Pryor CDP39.80 sq mi1.5%100.0%
Crow Agency CDP7.34 sq mi0.3%100.0%
Wyola CDP6.73 sq mi0.3%100.0%
St. Xavier CDP5.60 sq mi0.2%100.0%
Billings city2.39 sq mi0.1%5.2%
Fort Smith CDP1.38 sq mi0.1%100.0%
Lodge Grass town0.26 sq mi<0.1%100.0%
Forty Mile Colony CDP0.19 sq mi<0.1%100.0%

Showing all 8 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 210,279100.0%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
6,302
Active Voters
4,858 (77.1%)

Party Registration

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

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2023–20243,835 (60.9%)0 (0.0%)0 (0.0%)
2021–20223,350 (53.2%)0 (0.0%)0 (0.0%)
2019–20204,616 (73.2%)0 (0.0%)0 (0.0%)
2017–20183,828 (60.7%)0 (0.0%)0 (0.0%)
2015–20163,068 (48.7%)0 (0.0%)0 (0.0%)
2013–20142,712 (43.0%)0 (0.0%)0 (0.0%)
2011–20122,719 (43.1%)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
9,969 (± 724)
Median Age
36.1
Median Household Income
$58,922 (± $5,609)
High School Graduate or Higher (age 25+)
88.4%
Bachelor's Degree or Higher (age 25+)
17.6%

Population by Age

GroupPeopleShare
Under 182,70827.2%
18 to 645,60156.2%
65 and over1,66016.7%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)2842.8%
White, not Hispanic4,03140.4%
Black, not Hispanic1621.6%
Asian, not Hispanic00.0%
American Indian / Alaska Native, not Hispanic5,18752.0%
Native Hawaiian / Pacific Islander, not Hispanic00.0%
Some other race, not Hispanic250.3%
Two or more races, not Hispanic2802.8%

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
9,950
Citizen Voting Age Population (CVAP)
7,243

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic9,66597.1%
Hispanic2832.8%
White4,12841.5%
Black1621.6%
Asian00.0%
American Indian / Alaska Native5,18952.2%
Native Hawaiian / Pacific Islander00.0%
Two or More Races450.5%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic7,02296.9%
Hispanic2223.1%
White3,47548.0%
Black1482.0%
Asian30.0%
American Indian / Alaska Native3,36646.5%
Native Hawaiian / Pacific Islander00.0%
Two or More Races440.6%

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