Montana State House District 84

State Legislative District Profile (Lower Chamber)

Overview

District ID
mt-hd-084
State
Montana
Chamber
Lower chamber
District Code
084
Land Area
343.2 sq mi
Water Area
16 sq mi

Boundary

Boundary of Montana State House District 84

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Lewis and Clark County343.25 sq mi100.0%9.9%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Helena Valley Northeast CDP32.63 sq mi9.5%61.4%
Helena Valley Southeast CDP10.41 sq mi3.0%48.5%
Helena Valley Northwest CDP2.93 sq mi0.9%17.9%
York CDP0.33 sq mi0.1%99.9%

Showing all 4 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 210,723100.0%2.0%100.0%

Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).

Voters

Registered Voters
8,686
Active Voters
7,685 (88.5%)

Party Registration

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

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2023–20247,207 (83.0%)0 (0.0%)0 (0.0%)
2021–20225,502 (63.3%)0 (0.0%)0 (0.0%)
2019–20206,691 (77.0%)0 (0.0%)0 (0.0%)
2017–20185,681 (65.4%)0 (0.0%)0 (0.0%)
2015–20165,091 (58.6%)0 (0.0%)0 (0.0%)
2013–20144,429 (51.0%)0 (0.0%)0 (0.0%)
2011–20124,138 (47.6%)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
11,766 (± 1,136)
Median Age
43.8
Median Household Income
$99,375 (± $9,912)
High School Graduate or Higher (age 25+)
97.1%
Bachelor's Degree or Higher (age 25+)
41.4%

Population by Age

GroupPeopleShare
Under 182,73623.3%
18 to 646,82258.0%
65 and over2,20818.8%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)4293.6%
White, not Hispanic10,86892.4%
Black, not Hispanic80.1%
Asian, not Hispanic390.3%
American Indian / Alaska Native, not Hispanic640.5%
Native Hawaiian / Pacific Islander, not Hispanic00.0%
Some other race, not Hispanic290.2%
Two or more races, not Hispanic3292.8%

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
11,706
Citizen Voting Age Population (CVAP)
8,967

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic11,27396.3%
Hispanic4273.6%
White10,95493.6%
Black70.1%
Asian370.3%
American Indian / Alaska Native620.5%
Native Hawaiian / Pacific Islander10.0%
Two or More Races160.1%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic8,64896.4%
Hispanic3153.5%
White8,36393.3%
Black120.1%
Asian1481.7%
American Indian / Alaska Native1301.4%
Native Hawaiian / Pacific Islander00.0%
Two or More Races00.0%

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