Jefferson County, Montana
AkashicJefferson County, MTTrumpR+36.5
2024 precinct map of Jefferson CountyPrecinct-level 2024 presidential results for Jefferson County, with each precinct boundary colored by Democratic-vs-Republican margin, and gold where an independent or third-party candidate carried the precinct.
How it voted
Share of the 2024 vote
| Donald Trump ✓Republican | 66.9% | 5,544 |
|---|---|---|
| Kamala HarrisDemocratic | 30.3% | 2,516 |
| Robert F Kennedy Jr.We The People | 1.8% | 148 |
Harris +50Trump +50
12 precincts · 8,291 votes. Hover any precinct for its result.
The precinct map shows the 2024 presidential vote; the timeline scrubs the county’s overall result across 1892–2024.
38 presidential elections
| Year | Won | Democratic | Republican | Other | Margin | Total |
|---|---|---|---|---|---|---|
| R | 30.3%Harris2,516 | 66.9%Trump5,544 | 1.8%Kennedy148 | 8,291 | ||
| R | 32.2%Biden2,625 | 65.6%Trump5,345 | 2.2%Jorgensen181 | 8,151 | ||
| R | 29.8%Clinton1,998 | 62.2%Trump4,177 | 5.9%Johnson394 | 6,714 | ||
| R | 34.8%Obama2,272 | 62.2%Romney4,055 | 3.0%GRAY193 | 6,521 | ||
| R | 40.7%Obama2,582 | 55.8%McCain3,538 | 3.5%Paul220 | 6,340 | ||
| R | 32.1%Kerry1,881 | 65.5%Bush3,844 | 2.4%Nader143 | 5,868 | ||
| R | 29.3%Gore1,513 | 64.1%Bush3,308 | 3.7%Nader189 | 5,163 | ||
| R | 37.0%Clinton1,775 | 46.8%Dole2,248 | 15.2%Perot729 | 4,801 | ||
| R | 33.5%Clinton1,415 | 36.5%Bush1,541 | 27.7%Perot1,172 | 4,225 | ||
| R | 45.5%Dukakis1,746 | 52.3%Bush2,007 | 2.2%Paul84 | 3,837 | ||
| R | 36.6%Mondale1,324 | 61.5%Reagan2,226 | 1.9%Bergland68 | 3,618 | ||
| R | 32.7%Carter1,055 | 57.1%Reagan1,841 | 10.1%Anderson327 | 3,223 | ||
| R | 45.6%Carter1,210 | 52.3%Ford1,387 | 2.1%Anderson57 | 2,654 | ||
| R | 39.6%McGovern904 | 56.1%Nixon1,281 | 4.4%Schmitz100 | 2,285 | ||
| D | 46.3%Humphrey820 | 45.1%Nixon798 | 8.6%Wallace153 | 1,771 | ||
| D | 59.3%Johnson967 | 40.6%Goldwater662 | 0.1%Hass2 | 1,631 | ||
| R | 48.4%Kennedy769 | 51.4%Nixon817 | 0.3%Byrd4 | 1,590 | ||
| R | 38.6%Stevenson660 | 61.4%Eisenhower1,049 | 0.0% | 1,709 | ||
| R | 38.5%Stevenson687 | 60.8%Eisenhower1,084 | 0.7%Hallinan13 | 1,784 | ||
| D | 50.9%Truman836 | 45.6%Dewey750 | 3.5%Thurmond58 | 1,644 | ||
| D | 50.1%Roosevelt803 | 49.7%Dewey797 | 0.2%Thomas3 | 1,603 | ||
| D | 60.0%Roosevelt1,259 | 39.6%Willkie830 | 0.4%Thomas8 | 2,097 | ||
| D | 68.3%Roosevelt1,409 | 27.8%Landon573 | 3.9%Lemke81 | 2,063 | ||
| D | 58.9%Roosevelt1,246 | 37.1%Hoover784 | 4.0%Thomas84 | 2,114 | ||
| R | 42.2%Smith751 | 57.0%Hoover1,013 | 0.8%Thomas14 | 1,778 | ||
| O | 24.4%Davis434 | 36.5%Coolidge648 | 39.1%La Follette694 | 1,776 | ||
| R | 38.7%Cox688 | 54.5%Harding969 | 6.9%Debs122 | 1,779 | ||
| D | 57.8%Wilson1,124 | 36.6%Hughes712 | 5.6%Benson108 | 1,944 | ||
| D | 40.2%Wilson479 | 20.0%Taft239 | 39.8%Roosevelt475 | 1,193 | ||
| D | 51.3%Bryan714 | 39.2%Taft546 | 9.5%Debs132 | 1,392 | ||
| R | 39.8%Parker580 | 45.5%Roosevelt663 | 14.6%Debs213 | 1,456 | ||
| D | 65.4%Bryan980 | 32.6%McKinley488 | 2.0%Woolley30 | 1,498 | ||
| D | 93.4%Bryan2,185 | 6.5%McKinley153 | 0.0%Palmer1 | 2,339 | ||
| R | 37.5%Cleveland730 | 38.0%Harrison740 | 24.4%Weaver475 | 1,945 | ||
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presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | −0.5% |
| 1896 | +86.9% |
| 1900 | +32.8% |
| 1904 | −5.7% |
| 1908 | +12.1% |
| 1912 | +20.1% |
| 1916 | +21.2% |
| 1920 | −15.8% |
| 1924 | −12.0% |
| 1928 | −14.7% |
| 1932 | +21.9% |
| 1936 | +40.5% |
| 1940 | +20.5% |
| 1944 | +0.4% |
| 1948 | +5.2% |
| 1952 | −22.3% |
| 1956 | −22.8% |
| 1960 | −3.0% |
| 1964 | +18.7% |
| 1968 | +1.2% |
| 1972 | −16.5% |
| 1976 | −6.7% |
| 1980 | −24.4% |
| 1984 | −24.9% |
| 1988 | −6.8% |
| 1992 | −3.0% |
| 1996 | −9.9% |
| 2000 | −34.8% |
| 2004 | −33.5% |
| 2008 | −15.1% |
| 2012 | −27.3% |
| 2016 | −32.5% |
| 2020 | −33.4% |
| 2024 | −36.5% |
DemocraticRepublican
voter registration
Registered voters
Total registered voters, over time
Registered voters
| Year | Total registered |
|---|---|
| 2016 | 8,377 |
| 2018 | 8,801 |
| 2020 | 9,401 |
| 2022 | 9,423 |
| 2024 | 10,168 |
Source: U.S. Election Assistance Commission (EAVS)
Jefferson County's population of roughly 10,000 is spread across former gold and silver mining corridors west of Helena. It has delivered double-digit Republican presidential margins in every cycle this century, with 2024's spread exceeding 36 points.
Across the recorded series it reached a Democratic high of 86.9 points in 1896 and a Republican high of 36.5 points in 2024. Between 2020 and 2024 the county moved 3.2 points toward the Republican candidate; the 2024 margin was 36.5 points.
A population of 12,774, a 91% non-Hispanic-white share, and a median household income of $95,490 describe the county. The county's voting pattern over the last decade is most similar to that of Carbon County and Powell County.
Most similar counties
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 →
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All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Jefferson County, Montana. Akashic. https://akashic.app/county/30043/. Accessed May 20, 2026. License: CC BY 4.0.
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Frequently asked questions
How did Jefferson County, Montana vote in 2024?
In 2024, Jefferson County, Montana voted Republican by 36.5 points (R+36.5), carried by the Republican candidate. Out of 8,291 votes cast, 2,516 went Democratic and 5,544 went Republican.
When did Jefferson County, Montana last vote Democratic?
The most recent presidential election in which Jefferson County, Montana voted Democratic was 1968.
How many people live in Jefferson County, Montana?
Jefferson County, Montana has a population of 12,774 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Jefferson County, Montana?
Median household income in Jefferson County, Montana is $95,490 — above the national median of $80,734. The Montana state median is $72,509.
What is the political history of Jefferson County, Montana?
Akashic tracks 38 presidential elections in Jefferson County, Montana from 1876 to 2024. Of those, 12 went Democratic and 21 went Republican.