Montana State House District 100

State Legislative District Profile (Lower Chamber)

Overview

District ID
mt-hd-100
State
Montana
Chamber
Lower chamber
District Code
100
Land Area
2.34 sq mi
Water Area
0.14 sq mi

Boundary

Boundary of Montana State House District 100

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Missoula County2.34 sq mi100.0%0.1%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Missoula city2.21 sq mi94.4%6.3%

Showing all 1 place

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 110,715100.0%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
8,135
Active Voters
6,329 (77.8%)

Party Registration

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

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2023–20246,054 (74.4%)0 (0.0%)0 (0.0%)
2021–20225,867 (72.1%)0 (0.0%)0 (0.0%)
2019–20205,648 (69.4%)0 (0.0%)0 (0.0%)
2017–20184,582 (56.3%)0 (0.0%)0 (0.0%)
2015–20163,800 (46.7%)0 (0.0%)0 (0.0%)
2013–20143,046 (37.4%)0 (0.0%)0 (0.0%)
2011–20122,773 (34.1%)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
11,559 (± 1,056)
Median Age
33.7
Median Household Income
$58,103 (± $6,098)
High School Graduate or Higher (age 25+)
95.8%
Bachelor's Degree or Higher (age 25+)
53.3%

Population by Age

GroupPeopleShare
Under 181,48512.8%
18 to 648,76775.8%
65 and over1,30711.3%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)1,31811.4%
White, not Hispanic9,44981.7%
Black, not Hispanic1020.9%
Asian, not Hispanic1151.0%
American Indian / Alaska Native, not Hispanic560.5%
Native Hawaiian / Pacific Islander, not Hispanic00.0%
Some other race, not Hispanic180.2%
Two or more races, not Hispanic5014.3%

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
11,329
Citizen Voting Age Population (CVAP)
9,882

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic10,19490.0%
Hispanic1,13510.0%
White9,64885.2%
Black1020.9%
Asian1030.9%
American Indian / Alaska Native570.5%
Native Hawaiian / Pacific Islander00.0%
Two or More Races130.1%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic9,10392.1%
Hispanic7837.9%
White8,63787.4%
Black1531.5%
Asian1111.1%
American Indian / Alaska Native1831.9%
Native Hawaiian / Pacific Islander20.0%
Two or More Races150.2%

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