Connecticut 21st State House District, Connecticut: Democratic loyalist district. In 2024, voted D+20%. Democratic peak: D+45 in 1964.
Key facts
- 2024 presidential margin
- D+20MIT Election Lab
- Political archetype
- Democratic loyalistAkashic typology
- Population
- 30,6352024 5-year
- Median household income
- $93,1552024 5-year
- White (non-Hispanic)
- 63.8%2024 5-year
- Black
- 12.5%2024 5-year
- Hispanic / Latino
- 17.8%2024 5-year
- Peak Democratic margin
- D+45 in 1964MIT Election Lab
- Peak Republican margin
- R+34 in 1924MIT Election Lab
Constituent county margins for State House District 21, CTOne cell per constituent county, colored by 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), ordered bluest first.
R+60D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 8,794 | 5,846 | 14,898 | ||
| D | 9,514 | 5,686 | 15,453 | ||
| D | 8,100 | 5,352 | 14,122 | ||
| D | 8,255 | 5,083 | 13,500 | ||
| D | 9,119 | 4,931 | 14,232 | ||
| D | 7,820 | 5,454 | 13,517 | ||
| D | 7,403 | 4,449 | 12,537 | ||
| D | 6,783 | 3,825 | 12,097 | ||
| D | 6,463 | 4,483 | 14,008 | ||
| D | 6,569 | 5,885 | 12,579 | ||
| R | 5,466 | 7,047 | 12,565 | ||
| D | 5,300 | 5,049 | 12,262 | ||
| D | 6,208 | 5,798 | 12,076 | ||
| R | 5,618 | 6,418 | 12,155 | ||
| D | 6,043 | 4,329 | 10,934 | ||
| D | 7,605 | 2,888 | 10,512 | ||
| D | 6,090 | 4,429 | 10,518 | ||
| R | 3,935 | 5,597 | 9,532 | ||
| R | 4,517 | 4,783 | 9,325 | ||
| D | 3,852 | 3,341 | 7,354 | ||
| D | 3,930 | 3,023 | 6,991 | ||
| D | 3,552 | 2,798 | 6,364 | ||
| D | 3,208 | 2,096 | 5,531 | ||
| R | 2,257 | 2,290 | 4,715 | ||
| R | 2,047 | 2,406 | 4,490 | ||
| R | 889 | 1,943 | 3,143 | ||
| R | 954 | 1,734 | 2,832 | ||
| D | 774 | 765 | 1,608 | ||
| R | 548 | 556 | 1,414 | ||
| R | 437 | 812 | 1,336 | ||
| R | 523 | 790 | 1,367 | ||
| R | 480 | 747 | 1,261 | ||
| R | 640 | 1,031 | 1,737 | ||
| — | — | — | — | ||
| R | 514 | 538 | 1,083 | ||
| R | 477 | 483 | 960 | ||
| R | 453 | 496 | 949 | ||
| D | 466 | 442 | 908 |
Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
Irish
13.1%
Italian
12.9%
English
8.3%
Polish
8.1%
German
7.3%
French
4.9%
American
3.0%
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.
Age distribution by sex
Median age: 40.1 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$93,155
State House District 21 ranks near the middle of US counties.
State House District 21$93,155
Connecticut$95,781
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
10.3%
Child poverty is below the national average.
Children under 1813.1%
Working age (18–64)9.5%
Seniors (65+)9.9%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
75.9%
speak English only
Spanish12.2%
Other Indo-European7.4%
Asian & Pacific Islander3.0%
Other languages1.5%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 20.7% of residents not counted as adherents by any reporting body.
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.
The Democratic margin in Connecticut 21st State House District reached its widest at forty-five points in 1964. The margin in 2024 was twenty points — still decisive.
Its loyalty is rooted in its place. Median household income of $93,155, a 64% non-Hispanic-white share, and a population of 30,635 together describe a district whose political habits are deeply settled.
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.
State House District 21, Connecticut. Akashic. https://akashic.app/sld-lower/09021/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did State House District 21, Connecticut vote in 2024?
In 2024, State House District 21, Connecticut voted Democratic by 19.8 points (D+20), carried by the Democratic candidate. Out of 14,898 votes cast, 8,794 went Democratic and 5,846 went Republican.
What is State House District 21, Connecticut's political archetype?
Akashic classifies State House District 21, Connecticut as a "Democratic loyalist" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 21 times, Republican 16 times, and other 0 times.
When did State House District 21, Connecticut last vote Republican?
The most recent presidential election in which State House District 21, Connecticut voted Republican was 1984.
How many people live in State House District 21, Connecticut?
State House District 21, Connecticut has a population of 30,635 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in State House District 21, Connecticut?
Median household income in State House District 21, Connecticut is $93,155 — above the national median of $80,734. The Connecticut state median is $95,781.
What is the political history of State House District 21, Connecticut?
Akashic tracks 38 presidential elections in State House District 21, Connecticut from 1876 to 2024. Of those, 21 went Democratic and 16 went Republican. The district's archetype — "Democratic loyalist" — captures the overall trajectory of that voting record.