Boulder, CO Metro Area — Elections 1876–2024

Boulder, CO, Colorado: Diversifying Metro metro. In 2024, voted D+56%. Democratic peak: D+70 in 1896.

Key facts

2024 presidential margin: D+56MIT Election Lab
Political typology: Diversifying MetroAkashic typology
Population: 328,9612024 5-year
Median household income: $103,9942024 5-year
White (non-Hispanic): 77.8%2024 5-year
Black: 0.8%2024 5-year
Hispanic / Latino: 14.7%2024 5-year
Peak Democratic margin: D+70 in 1896MIT Election Lab
Peak Republican margin: R+36 in 1892MIT Election Lab

2024 presidential election

Boulder, CO

HarrisD+56

—

How it voted

Share of the 2024 vote

Kamala Harris ✓Democratic	76.5%	150,149
Donald TrumpRepublican	20.8%	40,758
OtherAll other candidates	2.7%	5,397

D+60

R+60

1 counties, each filled by 2024 D-vs-R margin.

presidential history

Presidential margin, 1876–2024

Democratic minus Republican, by election

Presidential margin over time
Year	Margin (D minus R)
1876	No data
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

38 presidential elections

Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
Year	Won	Margin	Democratic	Republican	Total
2024	D	+55.7%	150,149	40,758	196,304
2020	D	+56.6%	159,089	42,501	206,111
2016	D	+48.3%	132,334	41,396	188,145
2012	D	+41.8%	125,091	49,981	179,499
2008	D	+46.1%	124,159	44,904	171,763
2004	D	+33.9%	105,564	51,586	159,259
2000	D	+13.7%	69,983	50,873	139,626
1996	D	+17.6%	63,316	41,922	121,354
1992	D	+24.5%	64,567	33,553	126,771
1988	D	+8.5%	57,265	48,174	107,223
1984	R	−11.7%	42,195	53,535	97,223
1980	R	−14.1%	28,422	40,698	87,069
1976	R	−11.7%	33,284	42,830	81,253
1972	R	−15.7%	29,484	40,766	71,770
1968	R	−21.4%	17,422	27,671	47,988
1964	D	+13.3%	22,737	17,373	40,330
1960	R	−23.3%	12,276	19,791	32,197
1956	R	−34.3%	8,149	16,748	25,039
1952	R	−31.6%	7,767	15,069	23,079
1948	R	−7.8%	8,792	10,335	19,839
1944	R	−14.8%	7,442	10,054	17,610
1940	R	−7.5%	9,039	10,525	19,776
1936	D	+14.5%	9,788	7,244	17,501
1932	D	+5.5%	8,412	7,487	16,707
1928	R	−36.3%	4,363	9,457	14,015
1924	R	−33.4%	3,273	7,595	12,927
1920	R	−20.2%	4,200	6,456	11,148
1916	D	+28.4%	7,419	3,986	12,071
1912	D	+17.7%	4,330	2,445	10,620
1908	D	+7.9%	5,772	4,856	11,629
1904	R	−14.3%	4,030	5,483	10,172
1900	D	+15.2%	5,117	3,719	9,168
1896	D	+69.5%	6,046	1,033	7,209
1892	O	−36.4%	0	1,338	3,674
1888	R	−15.5%	1,176	1,639	2,981
1884	R	−17.5%	954	1,445	2,801
1880	R	−21.5%	796	1,313	2,402
1876	—	No data	—	—	—

Demographics

2024 ACS

Race, ethnicity, and ancestry

Click any group to see the ancestries typically reported within it.

German

18.1%

English

15.1%

Irish

12.6%

Italian

5.3%

Polish

3.1%

American

3.0%

French

2.9%

Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.

2024 ACS

Age distribution by sex

Median age: 37.7 in this county, 39.1 nationally

Male

Age

Female

0.7%

85+

1.2%

2.0%

75–84

2.4%

4.8%

65–74

5.2%

5.9%

55–64

6.1%

6.3%

45–54

6.2%

6.5%

35–44

6.1%

7.3%

25–34

6.3%

7.9%

18–24

7.5%

7.0%

5–17

6.7%

2.0%

1.9%

Source · American Community Survey 5-year estimates, 2024 release.

2024 ACS

Median household income

Inflation-adjusted dollars

$103,994

Boulder, CO ranks near the middle of US counties.

Boulder, CO$103,994

Colorado$95,470

United States$80,734

Source · American Community Survey 5-year estimates, 2024 release.

2024 ACS

Poverty rate

All persons below federal poverty line

11.2%

Child poverty is below the national average.

Children under 187.0%

Working age (18–64)12.2%

Seniors (65+)10.3%

Source · American Community Survey 5-year estimates, 2024 release.

2024 ACS

Language at home

Population aged 5 and older

84.9%

speak English only

Spanish8.2%

Other Indo-European3.8%

Asian & Pacific Islander2.6%

Other languages0.5%

Source · ACS 5-year estimates, 2024.

2020 religion census

Religious adherents

Adherents per capita by tradition

Catholic & Orthodox

16.2%

Other Christian

12.4%

Mainline Protestant

3.4%

Non-Christian

2.9%

Methodist

0.7%

Pentecostal & Holiness

0.5%

Baptist

0.3%

Source · 2020 US Religion Census. Remaining 63.6% of residents not counted as adherents by any reporting body.

Boulder's electorate skews younger and more degree-holding than any other Colorado metro, a demographic profile that has made it among the most consistently lopsided jurisdictions on the Front Range for two decades.

Across the recorded series it reached a Democratic high of seventy points in 1896 and a Republican high of thirty-six points in 1892. Between 2020 and 2024 the metro moved one point toward the Republican candidate; the 2024 margin was fifty-six points.

A population of 328,961, a 78% non-Hispanic-white share, and a median household income of $103,994 describe the metro.

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 →

Cite this page

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

Boulder, CO, Colorado. Akashic. https://akashic.app/cbsa/14500/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Frequently asked questions

How did Boulder, CO, Colorado vote in 2024?

In 2024, Boulder, CO, Colorado voted Democratic by 55.7 points (D+56), carried by the Democratic candidate. Out of 196,304 votes cast, 150,149 went Democratic and 40,758 went Republican.

What is Boulder, CO, Colorado's political typology?

Akashic places Boulder, CO, Colorado in the "Diversifying Metro" typology. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the metro has voted Democratic 18 times, Republican 18 times, and other 1 times.

When did Boulder, CO, Colorado last vote Republican?

The most recent presidential election in which Boulder, CO, Colorado voted Republican was 1984.

How many people live in Boulder, CO, Colorado?

Boulder, CO, 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, CO, Colorado?

Median household income in Boulder, CO, 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, CO, Colorado?

Akashic tracks 38 presidential elections in Boulder, CO, Colorado from 1876 to 2024. Of those, 18 went Democratic and 18 went Republican. The metro's typology — "Diversifying Metro" — captures where that record, its demographics, and its recent swing place it among American communities.

Boulder, CO has voted Democratic in ten straight presidential elections — D+56 in 2024.

Key facts

Demographics

Compare two places, side by side

Frequently asked questions