Akashic
1892–2024
Akashic
Connecticut 21st State House District
presidential margin
2008D+15.62012D+4.72016D+11.72020D+21.72024D+19.5
full record · 2008 → 2024
D+19.5
2024
median income$141,997U.S. $80,734 · CT $95,781
median age42.9U.S. 39.1 · CT 41.2
poverty rate3.8%U.S. 12.5% · CT 10.0%
bachelor’s+ (25+)41.5%U.S. 35.6% · CT 42.5%
non-english23.9%U.S. 22.3% · CT 23.4%
race · ethnicity · ancestry
Irish16.3%
Italian16.2%
English10.4%
Asian Indian6.8%
Chinese2.4%
Vietnamese1.0%
Puerto Rican3.4%
Dominican0.4%
Mexican0.4%
African American†1.9%
Jamaican0.9%
religion

Religious adherence is published only at the county level (U.S. Religion Census). See Capitol Planning Region.

American Community Survey 2024 5-year (income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024.

Connecticut 21st State House District

Akashic
Connecticut 21st State House DistrictHarrisD+19.5
2024
2024 presidential margin for Connecticut 21st State House DistrictThe boundary of Connecticut 21st State House District, filled by its 2024 presidential margin (D+19.5), over faint outlines of the counties it is drawn from.Connecticut 21st State House District · D+19.5
How it voted
Share of the 2024 vote
Kamala Harris ✓Democratic58.8%8,111
Donald TrumpRepublican39.3%5,419
Jill SteinGreen2.0%275
D+60
R+60
District boundary, filled by its own 2024 D-vs-R margin — precinct detail where available, over the 3 counties it's drawn from (shown faint).
The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.
County-level results (3 counties) — table
2024 presidential result by county for Connecticut 21st State House District — winner and D-vs-R margin.
CountyWinnerMargin
Capitol Planning Region, CTDemocraticD+20.1
Naugatuck Valley Planning Region, CTDemocraticD+11.2
Northwest Hills Planning Region, CTRepublicanR+5.4
5 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonDemocraticRepublicanOtherMarginTotal
D
58.8%Harris8,111
39.3%Trump5,419
2.0%Stein275
+19.5%
13,805
D
60.1%Biden8,640
38.3%Trump5,514
1.6%Jorgensen229
+21.7%
14,383
D
53.5%Clinton6,864
41.7%Trump5,358
4.8%Johnson619
+11.7%
12,841
D
52.4%Obama5,328
47.6%Romney4,846
0.0%
+4.7%
10,174
D
57.2%Obama7,230
41.6%McCain5,264
1.2%Nader146
+15.6%
12,640
presidential history
Presidential margin, 2008–2024
Democratic minus Republican, by election
Presidential margin over timeDemocratic-minus-Republican presidential margin from 2008 to 2024. Most recent: +19.5% in 2024.+19.5%DR20082024
Presidential margin over time
YearMargin (D minus R)
2008+15.6%
2012+4.7%
2016+11.7%
2020+21.7%
2024+19.5%
DemocraticRepublican
current representation
Current officeholders
DMike DemiccoState House · 21

State legislative officeholder from OpenStates nightly current-legislator data.

Source · OpenStates current legislator CSV.

With a 2024 presidential margin of D+19.5, this district of roughly 24,000 residents leans heavily toward Democratic candidates, reflecting the urban density and demographic composition typical of Connecticut's legislative districts drawn around smaller city neighborhoods.

Across the recorded series it reached a Democratic high of 21.7 points in 2020. Between 2020 and 2024 the district moved 2.2 points toward the Republican candidate; the 2024 margin was 19.5 points.

A population of 23,917, a 75% non-Hispanic-white share, and a median household income of $141,997 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 31 and State House District 17.

Political twins — state-house districts

The state-house districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.

State House District 31
Connecticut
96.9twin score
% unaffiliated12-yr trend2020–2024 trajectory
State House District 17
Connecticut
94.1twin score
% unaffiliated12-yr trend2020–2024 trajectory≠ % Asian
State House District 14
Connecticut
93.8twin score
% unaffiliated% Asian2020–2024 trajectory

Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.

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.
Connecticut 21st State House District. Akashic. https://akashic.app/sld-lower/09021/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Frequently asked questions

How did Connecticut 21st State House District vote in 2024?
In 2024, Connecticut 21st State House District voted Democratic by 19.5 points (D+19.5), carried by the Democratic candidate. Out of 13,805 votes cast, 8,111 went Democratic and 5,419 went Republican.
How many people live in Connecticut 21st State House District?
Connecticut 21st State House District has a population of 23,917 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Connecticut 21st State House District?
Median household income in Connecticut 21st State House District is $141,997 — above the national median of $80,734. The Connecticut state median is $95,781.
What is the political history of Connecticut 21st State House District?
Akashic tracks 5 presidential elections in Connecticut 21st State House District from 2008 to 2024. Of those, 5 went Democratic and 0 went Republican.