Jefferson County, Colorado
AkashicJefferson County, COHarrisD+19.5
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
| Kamala Harris ✓Democratic | 58.3% | 210,875 |
|---|---|---|
| Donald TrumpRepublican | 38.8% | 140,505 |
| Robert F Kennedy Jr.Independent | 1.2% | 4,251 |
Harris +50Trump +50
296 precincts · 361,716 votes. Hover any precinct for its result.
The precinct map shows the 2024 presidential vote; the timeline scrubs the county’s overall result across 1880–2024.
38 presidential elections
| Year | Won | Democratic | Republican | Other | Margin | Total |
|---|---|---|---|---|---|---|
| D | 58.3%Harris210,875 | 38.8%Trump140,505 | 1.2%Kennedy4,251 | 361,716 | ||
| D | 57.9%Biden218,393 | 39.3%Trump148,414 | 1.7%Jorgensen6,394 | 377,351 | ||
| D | 48.9%Clinton160,776 | 42.0%Trump138,177 | 5.6%Johnson18,537 | 328,883 | ||
| D | 51.2%Obama159,296 | 46.4%Romney144,197 | 2.4%Johnson7,559 | 311,052 | ||
| D | 53.6%Obama158,153 | 44.6%McCain131,627 | 1.8%Nader5,282 | 295,062 | ||
| R | 46.6%Kerry126,558 | 51.8%Bush140,644 | 1.6%Nader4,366 | 271,568 | ||
| R | 42.9%Gore100,970 | 51.0%Bush120,138 | 4.4%Nader10,336 | 235,491 | ||
| R | 42.7%Clinton89,494 | 48.4%Dole101,517 | 6.2%Perot12,967 | 209,723 | ||
| R | 36.2%Clinton80,834 | 37.1%Bush82,705 | 26.2%Perot58,404 | 223,203 | ||
| R | 41.6%Dukakis81,824 | 56.4%Bush110,820 | 2.0%Paul3,867 | 196,511 | ||
| R | 29.7%Mondale53,700 | 68.9%Reagan124,496 | 1.3%Bergland2,432 | 180,628 | ||
| R | 25.5%Carter41,525 | 59.7%Reagan97,008 | 14.8%Anderson24,078 | 162,611 | ||
| R | 36.6%Carter52,782 | 60.4%Ford87,080 | 2.9%McCarthy4,211 | 144,073 | ||
| R | 27.5%McGovern31,555 | 69.9%Nixon80,082 | 2.6%Schmitz2,960 | 114,597 | ||
| R | 35.1%Humphrey31,392 | 56.9%Nixon50,847 | 8.0%Wallace7,118 | 89,357 | ||
| D | 56.2%Johnson43,162 | 43.5%Goldwater33,398 | 0.3%Hass252 | 76,812 | ||
| R | 40.1%Kennedy22,962 | 59.6%Nixon34,105 | 0.2%Byrd137 | 57,204 | ||
| R | 35.8%Stevenson14,270 | 63.7%Eisenhower25,398 | 0.5%Andrews197 | 39,865 | ||
| R | 36.3%Stevenson11,509 | 63.1%Eisenhower19,971 | 0.6%Hallinan194 | 31,674 | ||
| R | 47.4%Truman9,145 | 51.3%Dewey9,903 | 1.3%Thurmond260 | 19,308 | ||
| R | 42.4%Roosevelt7,277 | 57.2%Dewey9,815 | 0.4%Thomas68 | 17,160 | ||
| R | 46.6%Roosevelt7,745 | 52.8%Willkie8,780 | 0.6%Thomas100 | 16,625 | ||
| D | 56.8%Roosevelt7,283 | 41.1%Landon5,271 | 2.1%Lemke271 | 12,825 | ||
| D | 50.0%Roosevelt6,023 | 45.8%Hoover5,522 | 4.2%Thomas503 | 12,048 | ||
| R | 29.5%Smith2,880 | 69.1%Hoover6,754 | 1.4%Thomas141 | 9,775 | ||
| R | 16.6%Davis1,271 | 63.7%Coolidge4,869 | 19.7%La Follette1,505 | 7,645 | ||
| R | 33.2%Cox1,941 | 61.5%Harding3,593 | 5.2%Debs306 | 5,840 | ||
| D | 60.4%Wilson3,368 | 36.6%Hughes2,040 | 3.0%Benson166 | 5,574 | ||
| D | 43.1%Wilson2,309 | 18.9%Taft1,011 | 38.0%Roosevelt2,037 | 5,357 | ||
| R | 47.8%Bryan2,583 | 48.6%Taft2,623 | 3.6%Debs193 | 5,399 | ||
| R | 36.4%Parker1,739 | 60.8%Roosevelt2,903 | 2.8%Debs136 | 4,778 | ||
| D | 53.0%Bryan2,138 | 44.8%McKinley1,807 | 2.2%Woolley89 | 4,034 | ||
| D | 89.0%Bryan3,176 | 8.4%McKinley300 | 2.6%Palmer93 | 3,569 | ||
| O | 0.0%Cleveland0 | 42.9%Harrison792 | 57.1%Weaver1,056 | 1,848 | ||
| R | 41.8%Cleveland767 | 52.9%Harrison970 | 5.2%Fisk96 | 1,833 | ||
| R | 44.8%Cleveland743 | 51.0%Blaine845 | 4.2%Butler70 | 1,658 | ||
| R | 47.1%Hancock790 | 49.6%Garfield832 | 3.4%Weaver57 | 1,679 | ||
| — | — | — | — | — |
presidential history
Presidential margin, 1880–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1880 | −2.5% |
| 1884 | −6.2% |
| 1888 | −11.1% |
| 1892 | −42.9% |
| 1896 | +80.6% |
| 1900 | +8.2% |
| 1904 | −24.4% |
| 1908 | −0.7% |
| 1912 | +24.2% |
| 1916 | +23.8% |
| 1920 | −28.3% |
| 1924 | −47.1% |
| 1928 | −39.6% |
| 1932 | +4.2% |
| 1936 | +15.7% |
| 1940 | −6.2% |
| 1944 | −14.8% |
| 1948 | −3.9% |
| 1952 | −26.7% |
| 1956 | −27.9% |
| 1960 | −19.5% |
| 1964 | +12.7% |
| 1968 | −21.8% |
| 1972 | −42.3% |
| 1976 | −23.8% |
| 1980 | −34.1% |
| 1984 | −39.2% |
| 1988 | −14.8% |
| 1992 | −0.8% |
| 1996 | −5.7% |
| 2000 | −8.1% |
| 2004 | −5.2% |
| 2008 | +9.0% |
| 2012 | +4.9% |
| 2016 | +6.9% |
| 2020 | +18.5% |
| 2024 | +19.5% |
DemocraticRepublican
voter registration
Registered voters
By party of registration, over time
DemocraticRepublicanUnaffiliatedOther parties
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2016 | 433,387 | 131,695 | 130,748 | 163,309 | 7,635 |
| 2018 | 446,435 | 132,567 | 123,791 | 181,970 | 8,107 |
| 2020 | 464,939 | 136,006 | 117,650 | 202,749 | 8,534 |
| 2022 | 471,438 | 132,851 | 105,752 | 224,259 | 8,576 |
| 2024 | 486,248 | 130,554 | 102,134 | 242,772 | 10,788 |
Source: Colorado Secretary of State
Jefferson County's electorate has trended sharply leftward since the early 2000s, with its mix of educated suburban households and Front Range growth driving a 2024 presidential margin of nearly 20 points — a dramatic reversal from its longtime Republican lean.
Across the recorded series it reached a Democratic high of 80.6 points in 1896 and a Republican high of 47.1 points in 1924. Between 2020 and 2024 the county moved 0.9 points toward the Democratic candidate; the 2024 margin was 19.5 points.
A population of 579,377, a 75% non-Hispanic-white share, and a median household income of $110,656 describe the county. The county's voting pattern over the last decade is most similar to that of Arapahoe County and Larimer County.
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All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Jefferson County, Colorado. Akashic. https://akashic.app/county/08059/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Frequently asked questions
How did Jefferson County, Colorado vote in 2024?
In 2024, Jefferson County, Colorado voted Democratic by 19.5 points (D+19.5), carried by the Democratic candidate. Out of 361,716 votes cast, 210,875 went Democratic and 140,505 went Republican.
When did Jefferson County, Colorado last vote Republican?
The most recent presidential election in which Jefferson County, Colorado voted Republican was 2004.
How many people live in Jefferson County, Colorado?
Jefferson County, Colorado has a population of 579,377 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Jefferson County, Colorado?
Median household income in Jefferson County, Colorado is $110,656 — above the national median of $80,734. The Colorado state median is $95,470.
What is the political history of Jefferson County, Colorado?
Akashic tracks 38 presidential elections in Jefferson County, Colorado from 1876 to 2024. Of those, 12 went Democratic and 24 went Republican.