How did Boulder, CO vote in the 2024 presidential election?

Boulder, CO voted Democratic in 2024 with a margin of D+55.8. Kamala D Harris received 150,149 votes and Donald Trump received 40,758 out of 196,150 total votes cast, a 0.8-point shift toward Republicans from 2020.

What is Boulder, CO's political history?

Boulder, CO has 37 presidential elections on record, spanning 1880 to 2024. It has voted Democratic in every presidential election since 1988. The largest single-election swing was 104.8 points in 1896.

What are the demographics of Boulder, CO?

Boulder, CO has a population of 328,961 according to the 2020 Census. The racial composition is 74.5% non-Hispanic white, 14.7% Hispanic. About 64% of residents hold a bachelor's degree or higher. Median household income is $103,994.

Which places are most similar to Boulder, CO?

Based on demographic and electoral similarity analysis, the three most similar metro areas to Boulder, CO are Ann Arbor, MI, Burlington-South Burlington, VT, Madison, WI. Similarity is computed using a vector embedding of demographic, economic, and electoral characteristics.

Boulder, CO

Latest: 2024↓ R+0.8 vs 2020

Safe Democratic — 329K residents — 1 counties

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Race & ancestry

Group	%
▶White (Non-Hispanic)(13)	74.5%
▶Hispanic / Latino(19)	14.7%
▶Black / African American(11)	0.8%
▶Asian(6)	4.7%
▶Middle Eastern / North African(10)	0.8%
▶Native American / Alaska Native(2)	0.3%
▶Native Hawaiian / Pacific Islander(3)	0.1%
Multiracial / Other	4.8%

View full demographics →

Religious adherence

Tradition	% Pop	% Adherents
Catholic	16.1%	43.9%
Evangelical Protestant	12.8%	34.8%
Other	4.1%	11.3%
Mainline Protestant	3.4%	9.3%
LDS (Mormon)	0.8%	2.1%
Orthodox Christian	0.2%	0.6%
Non-religious	63.4%	—

View full religion →

Presidential results

Year	Result
2024	Harris+55.8
2020	Biden+56.6
2016	Clinton+48.3
2012	Obama+41.8
2008	Obama+46.1
2004	Kerry+33.9
2000	Gore+13.7
1996	Clinton+17.6
1992	Clinton+24.5

View full election history →

Boulder, CO is a metro area that has a population of 328,961. In the 2024 presidential election, it voted Democratic with a margin of D+55.8. Akashic Edge tracks 37 presidential elections here, dating back to 1880.

Boulder, CO Presidential Election Results, 1948–2024
Year	Dem %	Rep %	Margin	Swing
2024	76.5%	20.8%	D+55.8	R+0.8
2020	77.2%	20.6%	D+56.6	D+8.2
2016	70.3%	22.0%	D+48.3	D+6.5
2012	69.7%	27.8%	D+41.8	R+4.3
2008	72.3%	26.1%	D+46.1	D+12.2
2004	66.3%	32.4%	D+33.9	D+20.2
2000	50.1%	36.4%	D+13.7	R+3.9
1996	52.2%	34.5%	D+17.6	R+6.8
1992	50.9%	26.5%	D+24.5	D+16.0
1988	53.4%	44.9%	D+8.5	D+20.1
1984	43.4%	55.1%	R+11.7	D+2.4
1980	32.6%	46.7%	R+14.1	R+2.4
1976	41.0%	52.7%	R+11.7	D+4.0
1972	41.1%	56.8%	R+15.7	D+5.6
1968	36.2%	57.6%	R+21.3	R+34.6
1964	56.4%	43.1%	D+13.3	D+36.6
1960	38.1%	61.5%	R+23.3	D+11.0
1956	32.5%	66.9%	R+34.3	R+2.7
1952	33.7%	65.3%	R+31.6	R+23.9
1948	44.3%	52.1%	R+7.8	—

Political Identity

What defines Boulder, CO?

It has a predominantly white, college-educated electorate that has shifted sharply toward Democrats in the Trump era.

Constituent Counties

Open in Cartographer

Similarity Explorer

Similar metro areas

Nearest neighbors matched on the same place-page feature set used across the dossier system.

8 visible matches

Ann Arbor, MI

Educated rural democratic

D+44.4

Similarity score98%

Burlington-South Burlington, VT

Educated rural democratic

D+41.5

Similarity score97%

Madison, WI

Educated rural democratic

D+43.0

Similarity score96%

Bellingham, WA

Educated rural democratic

D+24.7

Similarity score96%

Amherst Town-Northampton, MA

Educated rural democratic

D+41.7

Similarity score96%

Corvallis, OR

Educated rural democratic

D+39.3

Similarity score95%

Iowa City, IA

Educated rural competitive

D+30.5

Similarity score95%

Charlottesville, VA

Educated rural democratic

D+26.6

Similarity score95%

Constituent Geography

Counties in Boulder, CO

2024 presidential results across the counties that make up this geography.

Sort:

County	Pop.	Margin	Dem	Rep	Total	Share
Boulder	329K	D+55.8	150,149	40,758	196,150	100.0%

1 countiesTotal votes: 196,150

Historian Query

Ask the Historian

Explore Boulder, CO's political evolution with the Historian

“How has the Boulder, CO metro area voted in presidential elections?”

Automated Readout

Key Insights

High-confidence patterns distilled from this geography's election history.

Has voted Democratic in the last 5 presidential elections
Latest election (2024) was a Democratic landslide with a 55.8% margin
College attainment is 64% — 31pp above the national average. Similar education levels correlate with Democratic lean nationally

Race & Ancestry

Who Lives Here

A race-first Census view with ancestry expansion where source coverage is strong enough to support detail.

Boulder, COCensus ACS 2024Ancestry detail available

Census race profile

Major Census race and ethnicity groups shown as a share of total population.

Expand rows for ancestry detail

White (Non-Hispanic) 74.5%Hispanic 14.7%Multiracial 4.8%Asian 4.7%Black 0.8%Native American 0.3%

Group	Boulder, CO	National
▶White (Non-Hispanic)(13)	74.5%	57.4%
▶Hispanic / Latino(19)	14.7%	19.3%
Multiracial / Other	4.8%	4.0%
▶Asian(6)	4.7%	6.0%
▶Black / African American(11)	0.8%	12.2%
▶Middle Eastern / North African(10)	0.8%	0.9%
▶Native American / Alaska Native(2)	0.3%	0.9%
▶Native Hawaiian / Pacific Islander(3)	0.1%	0.2%

Method notes

Census treats race and Hispanic/Latino origin as separate questions. Race categories other than Hispanic reflect total populations (small Hispanic overlap in Black, Asian, AIAN, NHPI). “Multiracial / Other” is derived as a non-overlapping remainder.

Click rows to expand ancestry detail. Ancestry from ACS B04006, B03001, B02020, B02016. Totals may differ from race — individuals can report multiple ancestries.

Black / African American (estimated remainder) is derived as Black population share minus reported Sub-Saharan African and West Indian ancestry. It is shown as an estimated ancestry detail, not a standalone Census ancestry category.

MENA estimated from ancestry reporting — Census does not have a separate MENA race category. Not shown in bar (overlaps with other race groups).

Religious Adherents

Population that are religious adherents:

36.6%(120.4K people)

U.S. Religion Census 2020

Browse all religions

Tradition	% Pop	% Adherents	US Pop	US Adherents
Catholic	16.1%	43.9%	—	—
Evangelical Protestant	12.8%	34.8%	—	—
Other	4.1%	11.3%	—	—
Mainline Protestant	3.4%	9.3%	—	—
LDS (Mormon)	0.8%	2.1%	—	—
Orthodox Christian	0.2%	0.6%	—	—
Non-religiousPopulation	63.4%	—	—	—

Click the chevron to expand denominations. Tradition and denomination rows label both share of total population and share of all religious adherents. Non-religious is shown as a share of total population only.

Who lives in the Boulder, CO metro area? 328,961 residents across 1 counties.

Demographic Comparison

Demographics

Read this geography's profile in three layers: local, state (where available), and national baseline.

Boulder, CO vs National329K residents

64% of adults hold a bachelor's degree — 31pp above the national average. Places with similar education levels vote D+25 on average nationally.

Population & electorate

Scale, voting-age share, and this geography's footprint inside the national electorate.

Total population

Local vs state vs U.S.

329K

local

329KNational 334.9M

Share of U.S. population

Local vs state vs U.S.

0.10%

local

0.10%National 100%

Voting-age population

Local vs state vs U.S.

78.4%

local

78.4%National 75.7%

Economic profile

Income, attainment, and ownership indicators that often shape coalition structure and turnout behavior.

Median household income

Local vs state vs U.S.

$103,994

local

$103,994National $83,960

Poverty rate

Local vs state vs U.S.

11.2%

local

11.2%National 12.5%

College degree

Local vs state vs U.S.

64.2%

local

64.2%National 35.6%

Homeownership

Local vs state vs U.S.

62.0%

local

62.0%National 65.2%

Community profile

Age structure, language use, and nativity signals that explain how this geography differs from state and nation.

Median age

Local vs state vs U.S.

37.7 yrs

local

37.7 yrsNational 39.1 yrs

Age 18–29

Local vs state vs U.S.

22.3%

local

22.3%National 15.7%

Age 65+

Local vs state vs U.S.

16.4%

local

16.4%National 17.0%

Foreign born

Local vs state vs U.S.

10.1%

local

10.1%National 14.1%

Non-English at home

Local vs state vs U.S.

15.1%

local

15.1%National 22.2%

English only

Local vs state vs U.S.

84.9%

local

84.9%National 77.8%

Voter Turnout

Turnout in Boulder, CO

Estimated using 2020 Census voting-age population.

2024 Turnout

76.1%

vs Previous

-3.9pp

Voting-Age Pop

257,759

History

1988–2024

Competitiveness

How competitive is Boulder, CO?

Safe DAvg margin: D+53.6 (last 3 elections)

2008

D+46.1

2012

D+41.8

2016

D+48.3

2020

D+56.6

2024

D+55.8

Elasticity

14.7pp

margin range

Party Flips

last 30 years

5-Elec Avg

D+49.7

Ticket-Splitting

Do voters in Boulder, CO split their tickets?

Divergence between offices in the same election reveals persuadable voters.

ConsistencyModerate splitting (58/100)

2022 Office Comparisons

Offices	Margin A	Margin B	Split
Senate vs Governor	D+57.0	D+61.6	4.6pp

Average divergence across office pairs: 8.7pp

Containing Geography

Located In

Boulder, CO sits inside these higher-level geographies.

Colorado(State)

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