Montana 21st State House District, Montana: Sparse district. In 2024, voted R+22%. Democratic peak: D+51 in 1936.
Key facts
- 2024 presidential margin
- R+22MIT Election Lab
- Political archetype
- SparseAkashic typology
- Population
- 1872024 5-year
- Median household income
- $67,6902024 5-year
- White (non-Hispanic)
- 83.7%2024 5-year
- Black
- 1.3%2024 5-year
- Hispanic / Latino
- 5.3%2024 5-year
- Peak Democratic margin
- D+51 in 1936MIT Election Lab
- Peak Republican margin
- R+23 in 1920MIT Election Lab
Constituent county margins for State House District 21, MTOne cell per constituent county, colored by 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), ordered bluest first.
R+60D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 31 | 49 | 83 | ||
| R | 34 | 52 | 88 | ||
| R | 27 | 43 | 76 | ||
| R | 34 | 41 | 76 | ||
| D | 39 | 37 | 78 | ||
| R | 30 | 42 | 74 | ||
| R | 29 | 40 | 74 | ||
| D | 35 | 32 | 77 | ||
| D | 33 | 28 | 81 | ||
| O | 35 | 35 | 71 | ||
| R | 31 | 44 | 76 | ||
| R | 25 | 39 | 71 | ||
| R | 32 | 34 | 67 | ||
| R | 29 | 36 | 68 | ||
| D | 30 | 26 | 59 | ||
| D | 39 | 20 | 59 | ||
| D | 31 | 26 | 58 | ||
| R | 25 | 28 | 52 | ||
| R | 24 | 27 | 52 | ||
| D | 27 | 15 | 44 | ||
| D | 24 | 14 | 39 | ||
| D | 30 | 14 | 45 | ||
| D | 29 | 9 | 39 | ||
| D | 22 | 13 | 37 | ||
| R | 14 | 18 | 33 | ||
| R | 5 | 11 | 26 | ||
| R | 9 | 15 | 26 | ||
| D | 15 | 7 | 24 | ||
| D | 4 | 2 | 10 | ||
| O | 4 | 4 | 10 | ||
| R | 3 | 5 | 10 | ||
| D | 6 | 4 | 10 | ||
| D | 6 | 2 | 9 | ||
| O | 3 | 3 | 6 | ||
| — | — | — | — | ||
| — | — | — | — | ||
| — | — | — | — | ||
| — | — | — | — |
Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
21.9%
Irish
12.8%
English
11.5%
American
7.4%
Italian
3.7%
Scottish
2.8%
French
2.2%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
Age distribution by sex
Median age: 38.6 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$67,690
State House District 21 ranks near the middle of US counties.
State House District 21$67,690
Montana$72,509
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
13.1%
Children face moderate poverty.
Children under 1816.4%
Working age (18–64)12.2%
Seniors (65+)11.1%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
95.9%
speak English only
Spanish1.6%
Other Indo-European1.6%
Asian & Pacific Islander0.6%
Other languages0.4%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 62.2% of residents not counted as adherents by any reporting body.
With a 2024 presidential margin of R+58.9 across roughly 11,000 residents, this rural district ranks among the state's most politically uniform, leaving little competitive ground for statewide candidates seeking swing votes.
The margins in Montana 21st State House District have ranged widely. The Democratic peak was fifty-one points in 1936. The Republican peak was twenty-three points in 1920. The 2024 result was twenty-two points.
Places at this population scale resist generalization. The political identity of Montana 21st State House District is, more than anything, the political identity of the few hundred people who choose to live there.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
State House District 21, Montana. Akashic. https://akashic.app/sld-lower/30021/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did State House District 21, Montana vote in 2024?
In 2024, State House District 21, Montana voted Republican by 21.7 points (R+22), carried by the Republican candidate. Out of 83 votes cast, 31 went Democratic and 49 went Republican.
What is State House District 21, Montana's political archetype?
Akashic classifies State House District 21, Montana as a "Sparse" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 15 times, Republican 16 times, and other 3 times.
When did State House District 21, Montana last vote Democratic?
The most recent presidential election in which State House District 21, Montana voted Democratic was 2008.
How many people live in State House District 21, Montana?
State House District 21, Montana has a population of 187 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in State House District 21, Montana?
Median household income in State House District 21, Montana is $67,690 — below the national median of $80,734. The Montana state median is $72,509.
What is the political history of State House District 21, Montana?
Akashic tracks 38 presidential elections in State House District 21, Montana from 1876 to 2024. Of those, 15 went Democratic and 16 went Republican. The district's archetype — "Sparse" — captures the overall trajectory of that voting record.