Trenton-Princeton, NJ, New Jersey: Democratic loyalist metro. In 2024, voted D+34%. Democratic peak: D+42 in 1964.
Key facts
- 2024 presidential margin
- D+34MIT Election Lab
- Political archetype
- Democratic loyalistAkashic typology
- Population
- 385,8642024 5-year
- Median household income
- $100,6452024 5-year
- White (non-Hispanic)
- 46.2%2024 5-year
- Black
- 18.5%2024 5-year
- Hispanic / Latino
- 23.1%2024 5-year
- Peak Democratic margin
- D+42 in 1964MIT Election Lab
- Peak Republican margin
- R+38 in 1896MIT Election Lab
Constituent county margins for Trenton-Princeton, NJ, 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.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 107,558 | 52,274 | 163,779 | ||
| D | 122,532 | 51,641 | 175,600 | ||
| D | 104,775 | 46,193 | 158,058 | ||
| D | 104,377 | 47,355 | 155,355 | ||
| D | 107,926 | 50,223 | 160,039 | ||
| D | 91,580 | 56,604 | 149,510 | ||
| D | 83,256 | 46,670 | 135,559 | ||
| D | 77,641 | 40,559 | 131,726 | ||
| D | 71,383 | 50,473 | 145,260 | ||
| D | 68,712 | 65,384 | 135,345 | ||
| R | 66,398 | 71,195 | 138,121 | ||
| D | 60,888 | 53,450 | 128,582 | ||
| D | 69,621 | 58,453 | 130,856 | ||
| R | 62,180 | 69,303 | 133,191 | ||
| D | 63,218 | 45,354 | 125,529 | ||
| D | 86,985 | 35,081 | 122,214 | ||
| D | 74,166 | 46,924 | 121,269 | ||
| R | 52,684 | 56,029 | 109,105 | ||
| D | 57,751 | 50,423 | 108,662 | ||
| D | 49,690 | 37,794 | 89,436 | ||
| D | 52,383 | 36,844 | 89,371 | ||
| D | 50,121 | 37,190 | 87,533 | ||
| D | 47,702 | 29,283 | 77,564 | ||
| R | 30,284 | 33,715 | 66,879 | ||
| R | 27,908 | 41,056 | 69,338 | ||
| R | 14,639 | 30,689 | 51,551 | ||
| R | 15,713 | 29,626 | 46,683 | ||
| R | 10,621 | 14,213 | 25,493 | ||
| D | 7,773 | 5,676 | 21,120 | ||
| R | 9,289 | 14,941 | 25,329 | ||
| R | 8,527 | 14,900 | 24,467 | ||
| R | 7,858 | 13,874 | 22,498 | ||
| R | 5,970 | 13,847 | 20,718 | ||
| R | 9,348 | 9,795 | 19,671 | ||
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Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
Italian
10.2%
Irish
9.8%
German
8.3%
English
5.7%
Polish
4.9%
American
2.4%
French
1.0%
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: 39.5 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
$100,645
Trenton-Princeton, NJ ranks near the middle of US counties.
Trenton-Princeton, NJ$100,645
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
10.3%
Child poverty is below the national average.
Children under 1813.2%
Working age (18–64)9.3%
Seniors (65+)10.3%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
64.3%
speak English only
Spanish19.1%
Other Indo-European9.2%
Asian & Pacific Islander5.8%
Other languages1.7%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 52.1% of residents not counted as adherents by any reporting body.
Mercer County's electorate pairs the dense, Democratic-leaning precincts of Trenton's majority-minority neighborhoods with the high-education swing vote concentrated around Princeton, producing consistent but margin-sensitive results in statewide races.
The Democratic margin in Trenton-Princeton, NJ reached its widest at forty-two points in 1964. The margin in 2024 was thirty-four points — still decisive.
Its loyalty is rooted in its place. Median household income of $100,645, a 46% non-Hispanic-white share, and a population of 385,864 together describe a metro whose political habits are deeply settled.
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Trenton-Princeton, NJ, New Jersey — The Long Memory. Akashic Intelligence — The Long Memory. https://tiers.akashic.app/cbsa/45940/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did Trenton-Princeton, NJ, New Jersey vote in 2024?
In 2024, Trenton-Princeton, NJ, New Jersey voted Democratic by 33.8 points (D+34), carried by the Democratic candidate. Out of 163,779 votes cast, 107,558 went Democratic and 52,274 went Republican.
What is Trenton-Princeton, NJ, New Jersey's political archetype?
Akashic classifies Trenton-Princeton, NJ, New Jersey as a "Democratic loyalist" metro based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the metro has voted Democratic 21 times, Republican 13 times, and other 0 times.
When did Trenton-Princeton, NJ, New Jersey last vote Republican?
The most recent presidential election in which Trenton-Princeton, NJ, New Jersey voted Republican was 1984.
How many people live in Trenton-Princeton, NJ, New Jersey?
Trenton-Princeton, NJ, New Jersey has a population of 385,864 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Trenton-Princeton, NJ, New Jersey?
Median household income in Trenton-Princeton, NJ, New Jersey is $100,645 — above the national median of $80,734. The New Jersey state median is $103,556.
What is the political history of Trenton-Princeton, NJ, New Jersey?
Akashic tracks 38 presidential elections in Trenton-Princeton, NJ, New Jersey from 1876 to 2024. Of those, 21 went Democratic and 13 went Republican. The metro's archetype — "Democratic loyalist" — captures the overall trajectory of that voting record.