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Colorado

Jefferson County, Colorado presidential election results

In 2024 Kamala Harris won Jefferson County by 19.5 points, out of 361,504 votes for president.

Alamosa (no county figures)Boulder (no county figures)Broomfield (no county figures)Crowley (no county figures)Denver (no county figures)Douglas (no county figures)Gilpin (no county figures)Hinsdale (no county figures)Jackson (no county figures)Jefferson County: Kamala Harris +19.5Lincoln (no county figures)Montezuma (no county figures)Phillips (no county figures)Rio Grande (no county figures)San Juan (no county figures)Weld (no county figures)Adams (no county figures)Archuleta (no county figures)Baca (no county figures)Chaffee (no county figures)Cheyenne (no county figures)Conejos (no county figures)Costilla (no county figures)Delta (no county figures)Eagle (no county figures)Fremont (no county figures)Kiowa (no county figures)Kit Carson (no county figures)Larimer (no county figures)Montrose (no county figures)Logan (no county figures)Mesa (no county figures)Moffat (no county figures)Morgan (no county figures)Ouray (no county figures)Pitkin (no county figures)Rio Blanco (no county figures)Saguache (no county figures)Teller (no county figures)Washington (no county figures)Yuma (no county figures)Bent (no county figures)Clear Creek (no county figures)Custer (no county figures)El Paso (no county figures)Grand (no county figures)Gunnison (no county figures)Huerfano (no county figures)Lake (no county figures)Mineral (no county figures)Otero (no county figures)Pueblo (no county figures)Summit (no county figures)Arapahoe (no county figures)La Plata (no county figures)Las Animas (no county figures)Dolores (no county figures)Elbert (no county figures)Garfield (no county figures)Park (no county figures)Prowers (no county figures)Routt (no county figures)San Miguel (no county figures)Sedgwick (no county figures)
D+20R+20D+10R+102000: R+8.120002004: R+5.220042008: D+9.020082012: D+4.820122016: D+6.920162020: D+18.620202024: D+19.42024
Jefferson County margin: Republican minus Democratic share, in points. Bars above the line lean Republican, below lean Democratic.

2024

Colorado 2024
TicketVotesShareBar
Kamala Harris DEM210,87558.3%
Donald J. Trump REP140,50538.9%
All other candidates10,1242.8%
Total361,504

Jefferson County was D+19.4 against D+11.0 statewide, 8.4 points more Democratic than the state.

Source: County results compiled by Tony McGovern from news-media election-night tallies (Fox News, Politico, The New York Times); not a certified state document

2020

Colorado 2020
TicketVotesShareBar
Joseph R. Biden DEM218,39657.9%
Donald J. Trump REP148,41739.3%
All other candidates10,5442.8%
Total377,357

Jefferson County was D+18.6 against D+13.5 statewide, 5.1 points more Democratic than the state.

Source: County results compiled by Tony McGovern from news-media election-night tallies (Fox News, Politico, The New York Times); not a certified state document

2016

Colorado 2016
TicketVotesShareBar
Hillary Clinton DEM160,77648.9%
Donald J. Trump REP138,17742.0%
All other candidates29,9299.1%
Total328,882

Jefferson County was D+6.9 against D+4.9 statewide, 2.0 points more Democratic than the state.

Source: MIT Election Data and Science Lab, County Presidential Election Returns 2000-2016 (compiled from official state election records)

2012

Colorado 2012
TicketVotesShareBar
Barack Obama DEM159,29651.2%
Mitt Romney REP144,19746.4%
All other candidates7,5592.4%
Total311,052

Jefferson County was D+4.8 against D+5.4 statewide, 0.6 points more Republican than the state.

Source: MIT Election Data and Science Lab, County Presidential Election Returns 2000-2016 (compiled from official state election records)

2008

Colorado 2008
TicketVotesShareBar
Barack Obama DEM158,15353.6%
John McCain REP131,62744.6%
All other candidates5,2821.8%
Total295,062

Jefferson County was D+9.0 against D+9.0 statewide, 0.1 points more Democratic than the state.

Source: MIT Election Data and Science Lab, County Presidential Election Returns 2000-2016 (compiled from official state election records)

2004

Colorado 2004
TicketVotesShareBar
George W. Bush REP140,64451.8%
John Kerry DEM126,55846.6%
All other candidates4,0911.5%
Total271,293

Jefferson County was R+5.2 against R+4.7 statewide, 0.5 points more Republican than the state.

Source: MIT Election Data and Science Lab, County Presidential Election Returns 2000-2016 (compiled from official state election records)

2000

Colorado 2000
TicketVotesShareBar
George W. Bush REP120,13851.0%
Albert Gore, Jr. DEM100,97042.9%
All other candidates14,3836.1%
Total235,491

Jefferson County was R+8.1 against R+8.4 statewide, 0.3 points more Democratic than the state.

Source: MIT Election Data and Science Lab, County Presidential Election Returns 2000-2016 (compiled from official state election records)

Questions and answers

Who won Jefferson County, Colorado in 2024?

Kamala Harris won Jefferson County by 19.5 points, out of 361,504 votes counted for president.

Is Jefferson County Republican or Democratic?

Presidential results: 2024: Democratic by 19.4 points; 2020: Democratic by 18.6 points; 2016: Democratic by 6.9 points; 2012: Democratic by 4.8 points; 2008: Democratic by 9.0 points; 2004: Republican by 5.2 points; 2000: Republican by 8.1 points.

How does Jefferson County vote compared with the rest of Colorado?

In 2024 it was 8.4 points more Democratic than the state as a whole (Democratic by 19.4 points against Democratic by 11.0 points statewide).

Official results As published by The American Presidency Project (UC Santa Barbara) and the state documents it links. How we use this data