How did CO-03, Colorado vote in the 2024 presidential election?

CO-03, Colorado voted Republican in 2024 with a margin of R+7.0. The Democratic candidate received 194,866 votes and the Republican candidate received 224,994 out of 430,777 total votes cast, a 1.4-point shift toward Republicans from 2020.

What is CO-03, Colorado's political history?

CO-03, Colorado has 5 presidential elections on record, spanning 2008 to 2024. It has voted Republican in every presidential election since 2008. The largest single-election swing was 6.4 points in 2020.

What are the demographics of CO-03, Colorado?

CO-03, Colorado has a population of 728,794 according to the 2020 Census. The racial composition is 66.9% non-Hispanic white, 26.0% Hispanic. About 33% of residents hold a bachelor's degree or higher. Median household income is $70,890.

Colorado's 3rd Congressional District

Colorado · Latest: 2024↓ R+4.8 vs 2022

Competitive — flipped 5 times in 25 elections

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POPULATION
729K
HOUSE MARGIN
R+5.0
2024
PRES MARGIN
R+7.0
2024
LEAN
Lean R
COLLEGE+
33%

Place Story

What defines Colorado's 3rd Congressional District

Methodology

Leans Republican since 2008
- Lean R
- 5 straight R wins
Competitive with a modest baseline — persuasion matters on the margin.
Ticket-splitting: President ran 24.7pp behind House
- Divergence 24.7pp in 2008
Persuadable voters present — downballot races can run independent of presidential.
Biggest swing: D+6.4 in 2020
- 2016 → 2020

District in State Context

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Precinct Deep Dive

2024 / 2020 precinct vintages

See how each split precinct fragment inside CO-03 voted, swung, and lines up demographically.

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Historian Query

Ask the Historian

Explore this district's political evolution with the Historian

“How has Colorado's 3rd Congressional District voted in House elections since 2000?”

Race & Ancestry

Who Lives Here

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

CO-03Census 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) 66.9%Hispanic 26.0%Multiracial 3.2%Native American 2.0%Black 1.0%Asian 0.8%

Group	CO-03	State	National
▶White (Non-Hispanic)(13)	66.9%	64.8%	57.4%
▶Hispanic / Latino(20)	26.0%	22.5%	19.3%
Multiracial / Other	3.2%	4.1%	4.0%
▶Native American / Alaska Native(6)	2.0%	1.1%	0.9%
▶Black / African American(7)	1.0%	4.0%	12.2%
▶Asian(6)	0.8%	3.3%	6.0%
▶Middle Eastern / North African(9)	0.5%	—	0.9%

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).

Demographic Comparison

Demographics

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

CO-03 vs Colorado vs National729K residents

Population & electorate

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

Total population

Local vs state vs U.S.

729K

local

729KState 5.9MNational 334.9M

Share of U.S. population

Local vs state vs U.S.

0.22%

local

0.22%National 100%

Voting-age population

Local vs state vs U.S.

76.8%

local

76.8%State 76.9%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.

$70,890

local

$70,890State $97,187National $83,960

Poverty rate

Local vs state vs U.S.

12.4%

local

12.4%State 9.5%National 12.5%

College degree

Local vs state vs U.S.

33.3%

local

33.3%State 45.5%National 35.6%

Homeownership

Local vs state vs U.S.

71.0%

local

71.0%State 66.2%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.

41.9 yrs

local

41.9 yrsState 37.9 yrsNational 39.1 yrs

Age 18–29

Local vs state vs U.S.

14.0%

local

14.0%State 16.8%National 15.7%

Age 65+

Local vs state vs U.S.

21.2%

local

21.2%State 15.6%National 17.0%

Foreign born

Local vs state vs U.S.

5.2%

local

5.2%State 9.8%National 14.1%

Non-English at home

Local vs state vs U.S.

11.7%

local

11.7%State 16.2%National 22.2%

English only

Local vs state vs U.S.

88.3%

local

88.3%State 83.8%National 77.8%

Voter Turnout

Turnout in CO-03

Estimated using 2020 Census voting-age population.

2024 Turnout

76.9%

vs Previous

-0.6pp

Voting-Age Pop

560,020

History

2008–2024

Competitiveness

How competitive is CO-03?

Lean RAvg margin: R+8.2 (last 3 elections)

2008

R+1.5

2012

R+6.2

2016

R+11.9

2020

R+5.6

2024

R+7.0

Elasticity

10.4pp

margin range

Party Flips

last 30 years

5-Elec Avg

R+6.4

Ticket-Splitting

Do voters in CO-03 split their tickets?

Divergence between offices in the same election reveals persuadable voters.

ConsistencyModerate splitting (68/100)

2024 Office Comparisons

Offices	Margin A	Margin B	Split
President vs House	R+7.0	R+5.0	2.0pp

Average divergence across office pairs: 7.1pp

Colorado Comparison Set

Other Colorado Districts

Compare the rest of the delegation at a glance, with each card anchored to the latest House margin on current district pages.

14 sibling districts

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