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state house district

Montana 66th State House District

Office (updates table and map)

President margin by year

Place winner margin

1892–2024 · D minus R

Full record · 1892 → 2024

2024

Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab

The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.

People and households

Who lives here

Exact values for this place, its state, and the United States.

Race · ethnicity · ancestry

Communities and origins

German22.9%22.9%12.5%

English15.0%13.1%9.5%

Irish14.0%13.5%9.4%

Norwegian6.6%7.5%—

American4.8%5.4%5.3%

Scottish3.8%2.6%1.3%

Italian3.6%3.2%4.8%

Dutch3.1%——

Mexican1.7%2.9%11.3%

Spanish0.2%0.3%—

Puerto Rican0.2%0.2%1.8%

Spaniard0.2%0.3%—

Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.

Age and life stage

Measure	MT HD 66	Montana	United States
Median age	38.6	40.8	39.1
Age 18–24	15.9%	9.1%	9.2%
Age 65 and older	13.6%	20.0%	17.2%

Household economy

Measure	MT HD 66	Montana	United States
Median household income	$99,100	$72,509	$84,427
Poverty rate	9.6%	11.5%	12.5%
Bachelor's degree or higher (25+)	54.3%	35.3%	35.6%

Housing and tenure

Measure	MT HD 66	Montana	United States
Owner-occupied homes	67.0%	69.2%	65.2%
Renter-occupied homes	33.0%	30.8%	34.8%
Median home value	$813,700	$375,800	$332,700
Median gross rent (monthly)	$1,317	$1,081	$1,413
Renters paying 30%+ of income	40.8%	44.8%	51.1%
Vacant housing units	11.3%	13.2%	10.1%

Getting to work

Measure	MT HD 66	Montana	United States
Mean commute	16.8 min	19.1 min	26.4 min
Commutes 60 minutes or more	2.2%	4.8%	8.6%
Drives alone to work	53.5%	71.1%	68.8%
Takes public transit	0.3%	0.6%	3.2%
Works from home	19.9%	12.5%	15.1%

Languages at home

Measure	MT HD 66	Montana	United States
Speaks a non-English language at home	5.2%	4.2%	22.3%
Spanish	2.8%	1.5%	13.6%

Religious landscape

Measure	MT HD 66	Montana	United States
Catholic	—	10.3%	18.6%
Evangelical Protestant	—	13.6%	16.5%
Unclaimed / not counted	—	65.3%	51.5%

Origins and service

Measure	MT HD 66	Montana	United States
Foreign-born residents	2.3%	2.3%	14.1%
Naturalized citizens	0.9%	1.2%	7.4%
Not U.S. citizens	1.4%	1.1%	6.8%
Veterans (18+)	4.0%	9.0%	6.2%
Income inequality (Gini)	0.490	0.465	0.483

American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations · American Community Survey 2024 — housing and tenure (B25003, B25002, B25077, B25064, B25070), commuting (B08013, B08303, B08301), origins and service (B05002, B21001, B19083).

President results by year

Modeled candidate-vote estimate on current district boundaries

HarrisDemocratic55.8%4,088TrumpRepublican41.1%3,008OtherAll other candidates3.1%224

D+14.8

Lead: 1,080
Total: 7,320
vs nation: D+16.2

modeled Census-place estimatemodeled estimate

BidenDemocratic55.2%3,948TrumpRepublican41.5%2,968OtherAll other candidates3.3%237

D+13.7

Lead: 980
Total: 7,153
vs nation: D+9.2

modeled Census-place estimatemodeled estimate

ClintonDemocratic49.4%2,863TrumpRepublican41.5%2,406OtherAll other candidates9.2%531

D+7.9

Lead: 457
Total: 5,800
vs nation: D+5.8

modeled Census-place estimatemodeled estimate

ObamaDemocratic49.7%2,585RomneyRepublican47.2%2,458OtherAll other candidates3.1%161

D+2.4

Lead: 127
Total: 5,204
vs nation: R+1.4

modeled Census-place estimatemodeled estimate

ObamaDemocratic53.9%2,858McCainRepublican43.3%2,295OtherAll other candidates2.8%148

D+10.6

Lead: 563
Total: 5,301
vs nation: D+3.3

modeled Census-place estimatemodeled estimate

KerryDemocratic45.0%1,940BushRepublican52.8%2,277OtherAll other candidates2.1%92

R+7.8

Lead: 337
Total: 4,309
vs nation: R+5.4

modeled Census-place estimatemodeled estimate

GoreDemocratic35.0%1,192BushRepublican56.2%1,911OtherAll other candidates8.8%298

R+21.1

Lead: 719
Total: 3,401
vs nation: R+21.7

modeled Census-place estimatemodeled estimate

ClintonDemocratic41.5%1,268DoleRepublican48.3%1,475OtherAll other candidates10.2%312

R+6.8

Lead: 207
Total: 3,055
vs nation: R+15.3

modeled Census-place estimatemodeled estimate

Key facts

2024 presidential margin: D+14.8MIT Election Lab
Population: 10,9062024 5-year
Population density: 27 / sq mi2024 5-year · TIGER/Line
Land area: 404 sq miTIGER/Line
Median household income: $99,1002024 5-year
White (non-Hispanic): 88.8%2024 5-year
Black: 0.4%2024 5-year
Hispanic / Latino: 3.3%2024 5-year
Peak Democratic margin: D+67.2 in 1896MIT Election Lab
Peak Republican margin: R+37.7 in 1952MIT Election Lab
Most similar: State House District 59, MT · twin score 95.2

presidential history

Party record book

Montana 66th State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.

1892–2024 · 34 presidential cycles

Largest share of the presidential candidate vote cast here.

Democratic

William J. Bryan1896

83.6%

199 votes · D+67.2 · modeled estimate

Runner-up · Franklin D. Roosevelt, 1936 · 71.0%

Republican

Dwight D. Eisenhower1952

68.8%

711 votes · R+37.7 · modeled estimate

Runner-up · Richard Nixon, 1972 · 63.2%

Most votes

Largest number of votes cast for the party’s presidential nominee here.

Democratic

Kamala Harris2024

4,088votes

55.8% of the vote · D+14.8 · modeled estimate

Runner-up · Joe Biden, 2020 · 3,948 votes

Republican

Donald Trump2024

3,008votes

41.1% of the vote · D+14.8 · modeled estimate

Runner-up · Donald Trump, 2020 · 2,968 votes

Best relative to the U.S.

This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.

Democratic

William J. Bryan1896

+73.3pts D vs U.S.

Place D+67.2 · U.S. R+6.1 · modeled estimate

Runner-up · William J. Bryan, 1900 · +27.8 pts

Republican

Dwight D. Eisenhower1952

+27.0pts R vs U.S.

Place R+37.7 · U.S. R+10.8 · modeled estimate

Runner-up · Gerald Ford, 1976 · +23.6 pts

current representation

Current officeholders

DEric MatthewsState House · 66

State legislative officeholder from OpenStates nightly current-legislator data.

U.S. House elections · 3 House

Senate and governor results are in the Office selector at the top of this page.

U.S. House

Each row is a county-allocated estimate of U.S. House votes for this district — county returns apportioned onto its boundary, not precinct-counted. “Vote lead” is the estimated local lead here, not necessarily the winner of the full contest.

Source · Akashic county-allocated estimate from certified county returns, House; not precinct-counted.
Year	Vote lead	Democratic	Republican	Total
2024	D	53.3%3,180	46.7%2,784	5,964
2020	D	54.4%3,384	45.6%2,832	6,216
2018	D	57.5%2,751	42.5%2,035	4,786

Montana 66th State House District sits in the Northern Rockies. In 2024 it voted Democratic.

Across the recorded series it reached a Democratic high of 67.2 points in 1896 and a Republican high of 37.7 points in 1952. Between 2020 and 2024 the district moved 1.1 points toward the Democratic candidate; the 2024 margin was 14.8 points.

A population of 10,906, a 89% non-Hispanic-white share, and a median household income of $99,100 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 59 and State House District 94.

Political twins — state-house districts

The state-house districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.

State House District 59

12-yr trendcollege share% unaffiliated

State House District 94

12-yr trendpopulation scale% unaffiliated≠ French ancestry

State House District 89

population scale% unaffiliated12-yr trend≠ French ancestry

Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.

District research tools

Open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report → · Browse all comparisons →

Cite this page

All citations released under CC BY 4.0. Attribution: Akashic Intelligence.

Montana 66th State House District. Akashic. https://akashic.app/sld-lower/30066/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

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Places within Montana 66th State House District

counties it covers1

Gallatin County

Frequently asked questions

How did Montana 66th State House District vote in 2024?

In 2024, Montana 66th State House District voted Democratic by 14.8 points (D+14.8), carried by the Democratic candidate. Out of 7,320 votes cast, 4,088 went Democratic and 3,008 went Republican.

When did Montana 66th State House District last vote Republican?

The most recent presidential election in which Montana 66th State House District voted Republican was 2004.

How many people live in Montana 66th State House District?

Montana 66th State House District has a population of 10,906 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

What is the median household income in Montana 66th State House District?

Median household income in Montana 66th State House District is $99,100 — above the national median of $80,734. The Montana state median is $72,509.

What is the political history of Montana 66th State House District?

Akashic tracks 38 presidential elections in Montana 66th State House District from 1876 to 2024. Of those, 17 went Democratic and 17 went Republican.