State Senate District 21 State Senate District (CT) — Elections 1876–2024

Connecticut 21st State Senate District, Connecticut: Democratic loyalist district. In 2024, voted D+17%. Republican peak: R+41 in 1924.

Key facts

2024 presidential margin: D+17MIT Election Lab
Political archetype: Democratic loyalistAkashic typology
Population: 59,9402024 5-year
Median household income: $115,0152024 5-year
White (non-Hispanic): 60.3%2024 5-year
Black: 10.8%2024 5-year
Hispanic / Latino: 21.6%2024 5-year
Peak Democratic margin: D+25 in 2020MIT Election Lab
Peak Republican margin: R+41 in 1924MIT Election Lab

2024 results by constituent county

4 counties · 4 D · 0 R

R+60

D+60

One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.

38 presidential elections

Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
Year	Won	Margin	Democratic	Republican	Total
2024	D	+17.4%	16,328	11,412	28,188
2020	D	+24.5%	18,136	10,910	29,450
2016	D	+17.4%	14,908	10,320	26,306
2012	D	+11.5%	13,700	10,854	24,793
2008	D	+18.3%	15,248	10,506	25,975
2004	D	+4.5%	12,951	11,823	25,140
2000	D	+10.6%	12,274	9,816	23,217
1996	D	+9.7%	10,942	8,803	22,079
1992	R	−2.3%	10,126	10,708	25,697
1988	R	−16.7%	9,603	13,513	23,373
1984	R	−30.4%	8,410	15,801	24,312
1980	R	−19.5%	7,906	12,384	22,939
1976	R	−15.1%	9,463	12,852	22,466
1972	R	−27.8%	8,016	14,339	22,715
1968	R	−7.2%	8,977	10,476	20,833
1964	D	+24.3%	12,485	7,594	20,096
1960	R	−3.6%	9,577	10,288	19,866
1956	R	−38.2%	5,588	12,484	18,072
1952	R	−20.4%	6,944	10,528	17,577
1948	R	−10.9%	5,984	7,510	13,957
1944	R	−1.2%	6,443	6,600	13,186
1940	D	+2.4%	6,177	5,890	12,114
1936	D	+12.6%	5,744	4,404	10,668
1932	R	−4.4%	4,242	4,652	9,391
1928	R	−10.9%	3,712	4,633	8,413
1924	R	−41.2%	1,367	3,792	5,884
1920	R	−34.7%	1,693	3,603	5,511
1916	R	−8.5%	1,418	1,692	3,211
1912	D	+5.2%	1,060	915	2,802
1908	R	−22.5%	1,012	1,634	2,769
1904	R	−19.6%	1,059	1,596	2,741
1900	R	−14.8%	1,070	1,448	2,560
1896	R	−39.4%	603	1,455	2,164
1892	—	No data	—	—	—
1888	D	+1.8%	1,050	1,012	2,108
1884	D	+3.8%	910	844	1,755
1880	D	+1.2%	851	831	1,682
1876	D	+6.0%	799	708	1,507

Demographics

Race, ethnicity, and ancestry

Click any group to see the ancestries typically reported within it.

Italian

15.2%

Irish

13.2%

English

8.0%

German

7.7%

Polish

4.3%

American

4.0%

French

1.8%

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: 41.1 in this county, 39.1 nationally

Male

Age

Female

0.8%

85+

1.5%

2.3%

75–84

2.8%

4.7%

65–74

5.2%

6.9%

55–64

7.3%

6.5%

45–54

6.7%

6.4%

35–44

6.5%

6.0%

25–34

5.9%

4.5%

18–24

4.4%

8.2%

5–17

8.0%

2.7%

2.6%

Source · American Community Survey 5-year estimates, 2024 release.

Median household income

2024 inflation-adjusted dollars

$115,015

State Senate District 21 ranks near the middle of US counties.

State Senate District 21$115,015

Connecticut$95,781

United States$80,734

Source · American Community Survey 5-year estimates, 2024 release.

Poverty rate

All persons below federal poverty line

9.0%

Child poverty is below the national average.

Children under 1811.5%

Working age (18–64)8.2%

Seniors (65+)9.6%

Source · American Community Survey 5-year estimates, 2024 release.

Language at home

Population aged 5 and older

70.4%

speak English only

Spanish16.4%

Other Indo-European9.5%

Asian & Pacific Islander2.7%

Other languages1.0%

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Catholic & Orthodox

22.7%

Other Christian

4.6%

Mainline Protestant

3.1%

Non-Christian

1.7%

Baptist

1.1%

Methodist

1.0%

Pentecostal & Holiness

0.9%

Source · 2020 US Religion Census. Remaining 64.8% of residents not counted as adherents by any reporting body.

With a 2024 presidential margin of D+19.5, this district ranks among the state's strongest for Democrats, reflecting an urban and dense suburban electorate that has voted consistently blue across federal and state races.

The Democratic margin in Connecticut 21st State Senate District reached its widest at twenty-five points in 2020. The margin in 2024 was seventeen points — still decisive.

Its loyalty is rooted in its place. Median household income of $115,015, a 60% non-Hispanic-white share, and a population of 59,940 together describe a district whose political habits are deeply settled.

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Cite this page

All citations released under CC BY 4.0. Attribution: Akashic Intelligence.

State Senate District 21, Connecticut. Akashic. https://akashic.app/sld-upper/09021/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Frequently asked questions

How did State Senate District 21, Connecticut vote in 2024?

In 2024, State Senate District 21, Connecticut voted Democratic by 17.4 points (D+17), carried by the Democratic candidate. Out of 28,188 votes cast, 16,328 went Democratic and 11,412 went Republican.

What is State Senate District 21, Connecticut's political archetype?

Akashic classifies State Senate 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 16 times, Republican 21 times, and other 0 times.

When did State Senate District 21, Connecticut last vote Republican?

The most recent presidential election in which State Senate District 21, Connecticut voted Republican was 1992.

How many people live in State Senate District 21, Connecticut?

State Senate District 21, Connecticut has a population of 59,940 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

What is the median household income in State Senate District 21, Connecticut?

Median household income in State Senate District 21, Connecticut is $115,015 — above the national median of $80,734. The Connecticut state median is $95,781.

What is the political history of State Senate District 21, Connecticut?

Akashic tracks 38 presidential elections in State Senate District 21, Connecticut from 1876 to 2024. Of those, 16 went Democratic and 21 went Republican. The district's archetype — "Democratic loyalist" — captures the overall trajectory of that voting record.

Connecticut 21st State Senate District has voted Democratic in eight straight presidential cycles.

Key facts

Demographics

Compare two places, side by side

Frequently asked questions