New Jersey 21st State Senate District, New Jersey: Democratic loyalist district. In 2024, voted D+15%. Democratic peak: D+25 in 2020.
Key facts
- 2024 presidential margin
- D+15MIT Election Lab
- Political archetype
- Democratic loyalistAkashic typology
- Population
- 229,2932024 5-year
- Median household income
- $119,4652024 5-year
- White (non-Hispanic)
- 46.8%2024 5-year
- Black
- 13.8%2024 5-year
- Hispanic / Latino
- 26.4%2024 5-year
- Peak Democratic margin
- D+25 in 2020MIT Election Lab
Constituent county margins for State Senate District 21, NJOne 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.
5 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 59,755 | 43,583 | 105,619 | ||
| D | 68,418 | 40,844 | 111,195 | ||
| D | 56,080 | 35,955 | 95,719 | ||
| D | 51,564 | 35,764 | 88,360 | ||
| D | 53,548 | 39,237 | 93,881 |
Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
Italian
11.5%
Irish
9.5%
German
7.1%
Polish
4.9%
English
3.9%
American
3.5%
French
0.8%
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: 40.4 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
$119,465
State Senate District 21 ranks near the middle of US counties.
State Senate District 21$119,465
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
7.5%
Child poverty is below the national average.
Children under 189.3%
Working age (18–64)6.6%
Seniors (65+)10.5%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
58.9%
speak English only
Spanish21.6%
Other Indo-European11.9%
Asian & Pacific Islander5.6%
Other languages2.0%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 45.9% 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 twenty-five points in 2020. The margin in 2024 was fifteen points — still decisive.
Its loyalty is rooted in its place. Median household income of $119,465, a 47% non-Hispanic-white share, and a population of 229,293 together describe a district whose political habits are deeply settled.
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
State Senate District 21, New Jersey — The Long Memory. Akashic Intelligence — The Long Memory. https://tiers.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 15.3 points (D+15), carried by the Democratic candidate. Out of 105,619 votes cast, 59,755 went Democratic and 43,583 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 5 elections in the dataset, the district has voted Democratic 5 times, Republican 0 times, and other 0 times.
How many people live in State Senate District 21, New Jersey?
State Senate District 21, New Jersey has a population of 229,293 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 $119,465 — 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 5 presidential elections in State Senate District 21, New Jersey from 2008 to 2024. Of those, 5 went Democratic and 0 went Republican. The district's archetype — "Democratic loyalist" — captures the overall trajectory of that voting record.