Boulder County, Colorado
AkashicBoulder County, COHarrisD+55.7
2024 precinct map of Boulder CountyPrecinct-level 2024 presidential results for Boulder 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 | 76.5% | 150,149 |
|---|---|---|
| Donald TrumpRepublican | 20.8% | 40,758 |
| Robert F Kennedy Jr.Independent | 0.9% | 1,754 |
Harris +50Trump +50
190 precincts · 196,304 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 | 76.5%Harris150,149 | 20.8%Trump40,758 | 0.9%Kennedy1,754 | 196,304 | ||
| D | 77.2%Biden159,089 | 20.6%Trump42,501 | 1.2%Jorgensen2,539 | 206,111 | ||
| D | 70.3%Clinton132,334 | 22.0%Trump41,396 | 4.3%Johnson8,034 | 188,145 | ||
| D | 69.7%Obama125,091 | 27.8%Romney49,981 | 2.5%Johnson4,427 | 179,499 | ||
| D | 72.3%Obama124,159 | 26.1%McCain44,904 | 1.6%Nader2,700 | 171,763 | ||
| D | 66.3%Kerry105,564 | 32.4%Bush51,586 | 1.3%Nader2,109 | 159,259 | ||
| D | 50.1%Gore69,983 | 36.4%Bush50,873 | 11.8%Nader16,498 | 139,626 | ||
| D | 52.2%Clinton63,316 | 34.5%Dole41,922 | 5.6%Perot6,840 | 121,354 | ||
| D | 50.9%Clinton64,567 | 26.5%Bush33,553 | 21.9%Perot27,762 | 126,771 | ||
| D | 53.4%Dukakis57,265 | 44.9%Bush48,174 | 1.7%Paul1,784 | 107,223 | ||
| R | 43.4%Mondale42,195 | 55.1%Reagan53,535 | 1.5%Bergland1,493 | 97,223 | ||
| R | 32.6%Carter28,422 | 46.7%Reagan40,698 | 20.6%Anderson17,949 | 87,069 | ||
| R | 41.0%Carter33,284 | 52.7%Ford42,830 | 6.3%McCarthy5,139 | 81,253 | ||
| R | 41.1%McGovern29,484 | 56.8%Nixon40,766 | 2.1%Schmitz1,520 | 71,770 | ||
| R | 36.3%Humphrey17,422 | 57.7%Nixon27,671 | 6.0%Wallace2,895 | 47,988 | ||
| D | 56.4%Johnson22,737 | 43.1%Goldwater17,373 | 0.5%Hass220 | 40,330 | ||
| R | 38.1%Kennedy12,276 | 61.5%Nixon19,791 | 0.4%Byrd130 | 32,197 | ||
| R | 32.5%Stevenson8,149 | 66.9%Eisenhower16,748 | 0.6%Andrews142 | 25,039 | ||
| R | 33.7%Stevenson7,767 | 65.3%Eisenhower15,069 | 1.1%Hallinan243 | 23,079 | ||
| R | 44.3%Truman8,792 | 52.1%Dewey10,335 | 3.6%Thurmond712 | 19,839 | ||
| R | 42.3%Roosevelt7,442 | 57.1%Dewey10,054 | 0.6%Thomas114 | 17,610 | ||
| R | 45.7%Roosevelt9,039 | 53.2%Willkie10,525 | 1.1%Thomas212 | 19,776 | ||
| D | 55.9%Roosevelt9,788 | 41.4%Landon7,244 | 2.7%Lemke469 | 17,501 | ||
| D | 50.4%Roosevelt8,412 | 44.8%Hoover7,487 | 4.8%Thomas808 | 16,707 | ||
| R | 31.1%Smith4,363 | 67.5%Hoover9,457 | 1.4%Thomas195 | 14,015 | ||
| R | 25.3%Davis3,273 | 58.8%Coolidge7,595 | 15.9%La Follette2,059 | 12,927 | ||
| R | 37.7%Cox4,200 | 57.9%Harding6,456 | 4.4%Debs492 | 11,148 | ||
| D | 61.5%Wilson7,419 | 33.0%Hughes3,986 | 5.5%Benson666 | 12,071 | ||
| D | 40.8%Wilson4,330 | 23.0%Taft2,445 | 36.2%Roosevelt3,845 | 10,620 | ||
| D | 49.6%Bryan5,772 | 41.8%Taft4,856 | 8.6%Debs1,001 | 11,629 | ||
| R | 39.6%Parker4,030 | 53.9%Roosevelt5,483 | 6.5%Debs659 | 10,172 | ||
| D | 55.8%Bryan5,117 | 40.6%McKinley3,719 | 3.6%Woolley332 | 9,168 | ||
| D | 83.9%Bryan6,046 | 14.3%McKinley1,033 | 1.8%Palmer130 | 7,209 | ||
| O | 0.0%Cleveland0 | 36.4%Harrison1,338 | 63.6%Weaver2,336 | 3,674 | ||
| R | 39.4%Cleveland1,176 | 55.0%Harrison1,639 | 5.6%Fisk166 | 2,981 | ||
| R | 34.1%Cleveland954 | 51.6%Blaine1,445 | 14.4%Butler402 | 2,801 | ||
| R | 33.1%Hancock796 | 54.7%Garfield1,313 | 12.2%Weaver293 | 2,402 | ||
| — | — | — | — | — |
presidential history
Presidential margin, 1880–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1880 | −21.5% |
| 1884 | −17.5% |
| 1888 | −15.5% |
| 1892 | −36.4% |
| 1896 | +69.5% |
| 1900 | +15.2% |
| 1904 | −14.3% |
| 1908 | +7.9% |
| 1912 | +17.7% |
| 1916 | +28.4% |
| 1920 | −20.2% |
| 1924 | −33.4% |
| 1928 | −36.3% |
| 1932 | +5.5% |
| 1936 | +14.5% |
| 1940 | −7.5% |
| 1944 | −14.8% |
| 1948 | −7.8% |
| 1952 | −31.6% |
| 1956 | −34.3% |
| 1960 | −23.3% |
| 1964 | +13.3% |
| 1968 | −21.4% |
| 1972 | −15.7% |
| 1976 | −11.7% |
| 1980 | −14.1% |
| 1984 | −11.7% |
| 1988 | +8.5% |
| 1992 | +24.5% |
| 1996 | +17.6% |
| 2000 | +13.7% |
| 2004 | +33.9% |
| 2008 | +46.1% |
| 2012 | +41.8% |
| 2016 | +48.3% |
| 2020 | +56.6% |
| 2024 | +55.7% |
DemocraticRepublican
voter registration
Registered voters
By party of registration, over time
DemocraticRepublicanUnaffiliatedOther parties
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2016 | 266,217 | 113,733 | 45,569 | 101,653 | 5,262 |
| 2018 | 251,112 | 107,352 | 37,701 | 101,246 | 4,813 |
| 2020 | 257,455 | 109,959 | 34,264 | 109,012 | 4,220 |
| 2022 | 258,327 | 105,079 | 29,623 | 119,557 | 4,068 |
| 2024 | 266,648 | 102,792 | 28,261 | 130,436 | 5,159 |
Source: Colorado Secretary of State
Boulder County's D+55.8 margin in 2024 makes it an outlier even among Front Range urban counties, driven by a dense concentration of university employment, graduate-degree holders, and white-collar tech workers clustered around CU Boulder.
Across the recorded series it reached a Democratic high of 69.5 points in 1896 and a Republican high of 36.4 points in 1892. Between 2020 and 2024 the county moved 0.8 points toward the Republican candidate; the 2024 margin was 55.7 points.
A population of 328,961, a 75% non-Hispanic-white share, and a median household income of $103,994 describe the county. The county's voting pattern over the last decade is most similar to that of San Juan County and Benton County.
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All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Boulder County, Colorado. Akashic. https://akashic.app/county/08013/. Accessed May 20, 2026. License: CC BY 4.0.
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Frequently asked questions
How did Boulder County, Colorado vote in 2024?
In 2024, Boulder County, Colorado voted Democratic by 55.7 points (D+55.7), carried by the Democratic candidate. Out of 196,304 votes cast, 150,149 went Democratic and 40,758 went Republican.
When did Boulder County, Colorado last vote Republican?
The most recent presidential election in which Boulder County, Colorado voted Republican was 1984.
How many people live in Boulder County, Colorado?
Boulder County, Colorado has a population of 328,961 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Boulder County, Colorado?
Median household income in Boulder County, Colorado is $103,994 — above the national median of $80,734. The Colorado state median is $95,470.
What is the political history of Boulder County, Colorado?
Akashic tracks 38 presidential elections in Boulder County, Colorado from 1876 to 2024. Of those, 18 went Democratic and 18 went Republican.