How did CO-HD-21, Colorado vote in the 2024 presidential election?

CO-HD-21, Colorado voted Republican in 2024 with a margin of R+15.0. Kamala D Harris received 13,221 votes and Donald Trump received 18,062 out of 32,218 total votes cast, a 3.8-point shift toward Republicans from 2020.

What is CO-HD-21, Colorado's political history?

CO-HD-21, 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 15.5 points in 2016.

What are the demographics of CO-HD-21, Colorado?

CO-HD-21, Colorado has a population of 88,583 according to the 2020 Census. The racial composition is 55.8% non-Hispanic white, 22.1% Hispanic, 10.2% Black.

Which places are most similar to CO-HD-21, Colorado?

Based on demographic and electoral similarity analysis, the three most similar state house districts to CO-HD-21, Colorado are Florida State House District 69, Colorado State House District 15, Texas State House District 93. Similarity is computed using a vector embedding of demographic, economic, and electoral characteristics.

Colorado State House District 21

Colorado · Latest: 2024↓ R+3.8 vs 2020

Safe Republican — shifted 3.8pp toward Republicans in 2024 — 89K residents

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Similarity Explorer

Similar state house districts

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

8 visible matches

Florida State House District 69FL

Urban Competitive

R+8.7

Similarity score93%

Colorado State House District 15CO

Urban Competitive

R+13.3

Similarity score91%

Texas State House District 93TX

Urban Competitive

R+19.2

Similarity score90%

Texas State House District 150TX

Urban Competitive

R+16.4

Similarity score90%

Texas State House District 122TX

Urban Competitive

R+11.5

Similarity score89%

Colorado State House District 48CO

Suburban Republican 3

R+26.4

Similarity score88%

New Mexico State House District 57NM

Urban Competitive

R+0.5

Similarity score88%

Texas State House District 121TX

Urban Competitive

R+5.0

Similarity score88%

Historian Query

Ask the Historian

Explore CO-HD-21's political evolution with the Historian

“How has Colorado State House District 21 voted in presidential elections?”

Race & Ancestry

Who Lives Here

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

CO-HD-21Census ACS 2024

Census race profile

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

Expand rows for ancestry detail

White (Non-Hispanic) 55.8%Hispanic 22.1%Black 10.2%Multiracial 6.8%Asian 2.8%Native American 1.2%Native Hawaiian 1.1%

Group	CO-HD-21	State	National
White (Non-Hispanic)	55.8%	64.8%	57.4%
Hispanic / Latino	22.1%	22.5%	19.3%
Black / African American	10.2%	4.0%	12.2%
Multiracial / Other	6.8%	4.1%	4.0%
Asian	2.8%	3.3%	6.0%
Native American / Alaska Native	1.2%	1.1%	0.9%
Native Hawaiian / Pacific Islander	1.1%	0.2%	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.

Detailed ancestry data unavailable for this geography.

Who lives in Colorado State House District 21? 88,583 residents as of the 2020 Census.

Demographic Comparison

Demographics

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

CO-HD-21 vs Colorado vs National89K residents

Population & electorate

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

Total population

Local vs state vs U.S.

89K

local

89KState 5.9MNational 334.9M

Share of U.S. population

Local vs state vs U.S.

0.03%

local

0.03%National 100%

Voting-age population

Local vs state vs U.S.

72.8%

local

72.8%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.

N/A

local

N/AState $97,187National $83,960

Poverty rate

Local vs state vs U.S.

N/A

local

N/AState 9.5%National 12.5%

College degree

Local vs state vs U.S.

N/A

local

N/AState 45.5%National 35.6%

Homeownership

Local vs state vs U.S.

N/A

local

N/AState 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.

N/A

local

N/AState 37.9 yrsNational 39.1 yrs

Age 18–29

Local vs state vs U.S.

N/A

local

N/AState 16.8%National 15.7%

Age 65+

Local vs state vs U.S.

N/A

local

N/AState 15.6%National 17.0%

Foreign born

Local vs state vs U.S.

N/A

local

N/AState 9.8%National 14.1%

Non-English at home

Local vs state vs U.S.

N/A

local

N/AState 16.2%National 22.2%

English only

Local vs state vs U.S.

N/A

local

N/AState 83.8%National 77.8%

Voter Turnout

Turnout in CO-HD-21

Estimated using 2020 Census voting-age population.

2024 Turnout

50.0%

vs Previous

-71.6pp

Voting-Age Pop

64,459

History

2008–2024

Competitiveness

How competitive is CO-HD-21?

Safe RAvg margin: R+16.4 (last 3 elections)

2008

R+13.3

2012

R+7.3

2016

R+22.8

2020

R+11.2

2024

R+15.0

Elasticity

15.5pp

margin range

Party Flips

last 30 years

5-Elec Avg

R+13.9

Other Colorado State House Districts

64 total

Name	Margin ↓
CO-HD-08	D+74.1
CO-HD-10	D+72.6
CO-HD-06	D+69.4
CO-HD-05	D+58.5
CO-HD-12	D+58.1
CO-HD-04	D+58.0
CO-HD-02	D+57.0
CO-HD-53	D+49.3
CO-HD-09	D+49.2
CO-HD-07	D+44.9
CO-HD-11	D+40.5
CO-HD-42	D+35.0
CO-HD-03	D+33.5
CO-HD-52	D+33.3
CO-HD-49	D+33.0
CO-HD-23	D+30.0
CO-HD-01	D+29.3
CO-HD-30	D+29.2
CO-HD-41	D+29.0
CO-HD-35	D+25.0
CO-HD-36	D+24.0
CO-HD-33	D+22.9
CO-HD-27	D+22.4
CO-HD-29	D+22.3
CO-HD-37	D+19.4

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