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

New Jersey 21st State Senate District, New Jersey: Democratic loyalist district. In 2024, voted D+17%. Republican peak: R+49 in 1920.

Key facts

2024 presidential margin: D+17MIT Election Lab
Political archetype: Democratic loyalistAkashic typology
Population: 309,0172024 5-year
Median household income: $117,1152024 5-year
White (non-Hispanic): 45.4%2024 5-year
Black: 15.1%2024 5-year
Hispanic / Latino: 28.1%2024 5-year
Peak Democratic margin: D+30 in 1964MIT Election Lab
Peak Republican margin: R+49 in 1920MIT Election Lab

2024 results by constituent county

4 counties · 3 D · 1 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	+17.5%	80,911	56,296	140,858
2020	D	+27.4%	92,678	52,542	146,244
2016	D	+23.9%	76,595	46,105	127,514
2012	D	+20.7%	70,593	46,185	118,116
2008	D	+17.6%	72,951	50,936	125,078
2004	D	+7.6%	61,662	52,915	115,544
2000	D	+12.1%	56,069	43,600	103,137
1996	D	+12.8%	52,940	39,849	101,905
1992	R	−2.1%	46,458	48,759	111,203
1988	R	−16.8%	43,353	61,074	105,458
1984	R	−24.8%	41,156	68,523	110,535
1980	R	−16.7%	38,335	55,609	103,683
1976	R	−8.9%	47,499	56,970	106,669
1972	R	−27.1%	38,936	68,687	109,766
1968	R	−5.2%	45,504	51,049	106,249
1964	D	+30.0%	68,694	36,913	106,109
1960	R	−4.0%	48,673	52,783	102,078
1956	R	−38.4%	26,777	60,756	88,476
1952	R	−23.4%	31,337	50,669	82,701
1948	R	−14.6%	26,350	35,849	65,023
1944	R	−8.4%	29,441	34,922	65,068
1940	R	−6.8%	28,574	32,784	61,895
1936	D	+6.7%	28,405	24,782	53,793
1932	R	−12.5%	20,910	27,103	49,561
1928	R	−29.4%	15,075	27,738	43,002
1924	R	−47.7%	6,312	20,828	30,443
1920	R	−48.7%	5,391	16,600	23,003
1916	R	−19.7%	4,651	7,032	12,100
1912	D	+16.6%	4,239	2,461	10,737
1908	R	−25.8%	3,959	6,890	11,379
1904	R	−21.8%	3,841	6,094	10,337
1900	R	−20.5%	3,606	5,577	9,621
1896	R	−27.8%	2,900	5,330	8,741
1892	D	+3.7%	3,970	3,679	7,911
1888	—	No data	—	—	—
1884	—	No data	—	—	—
1880	—	No data	—	—	—
1876	—	No data	—	—	—

Demographics

Race, ethnicity, and ancestry

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

Italian

11.0%

Irish

9.0%

German

6.7%

Polish

4.7%

English

3.7%

American

3.6%

French

0.7%

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: 40.2 in this county, 39.1 nationally

Male

Age

Female

0.7%

85+

1.3%

2.0%

75–84

2.7%

4.4%

65–74

4.9%

6.7%

55–64

6.9%

45–54

6.9%

35–44

6.9%

6.1%

25–34

6.0%

4.2%

18–24

4.1%

8.7%

5–17

8.2%

2.9%

2.8%

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

Median household income

2024 inflation-adjusted dollars

$117,115

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

State Senate District 21$117,115

New Jersey$103,556

United States$80,734

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

Poverty rate

All persons below federal poverty line

7.7%

Child poverty is below the national average.

Children under 189.7%

Working age (18–64)6.8%

Seniors (65+)10.7%

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

Language at home

Population aged 5 and older

57.9%

speak English only

Spanish23.2%

Other Indo-European11.8%

Asian & Pacific Islander5.1%

Other languages2.1%

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Catholic & Orthodox

33.5%

Non-Christian

7.5%

Other Christian

5.3%

Baptist

2.9%

Mainline Protestant

2.9%

Pentecostal & Holiness

1.3%

Methodist

1.1%

Source · 2020 US Religion Census. Remaining 45.5% of residents not counted as adherents by any reporting body.

Anchored in Essex County's urban core, this district posts presidential margins above D+30, reflecting a densely populated, majority-minority electorate that has voted reliably for Democratic candidates across offices for decades.

The Democratic margin in New Jersey 21st State Senate District reached its widest at thirty points in 1964. The margin in 2024 was seventeen points — still decisive.

Its loyalty is rooted in its place. Median household income of $117,115, a 45% non-Hispanic-white share, and a population of 309,017 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 Senate District 21, New Jersey. Akashic. https://akashic.app/sld-upper/34021/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Frequently asked questions

How did State Senate District 21, New Jersey vote in 2024?

In 2024, State Senate District 21, New Jersey voted Democratic by 17.5 points (D+17), carried by the Democratic candidate. Out of 140,858 votes cast, 80,911 went Democratic and 56,296 went Republican.

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

Akashic classifies State Senate District 21, New Jersey as a "Democratic loyalist" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 12 times, Republican 22 times, and other 0 times.

When did State Senate District 21, New Jersey last vote Republican?

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

How many people live in State Senate District 21, New Jersey?

State Senate District 21, New Jersey has a population of 309,017 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, New Jersey?

Median household income in State Senate District 21, New Jersey is $117,115 — above the national median of $80,734. The New Jersey state median is $103,556.

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

Akashic tracks 38 presidential elections in State Senate District 21, New Jersey from 1876 to 2024. Of those, 12 went Democratic and 22 went Republican. The district's archetype — "Democratic loyalist" — captures the overall trajectory of that voting record.

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

Key facts

Demographics

Compare two places, side by side

Frequently asked questions