Somerset County, New Jersey: New American county. In 2024, voted D+14%. Republican peak: R+48 in 1924.
Key facts
- 2024 presidential margin
- D+14MIT Election Lab
- Political typology
- New AmericanAkashic typology
- Population
- 349,8462024 5-year
- Median household income
- $140,3742024 5-year
- White (non-Hispanic)
- 51.6%2024 5-year
- Black
- 9.5%2024 5-year
- Hispanic / Latino
- 17.6%2024 5-year
- Peak Democratic margin
- D+21 in 1964MIT Election Lab
- Peak Republican margin
- R+48 in 1924MIT Election Lab
- Most similar
- Prince William County, VA · similarity 0.97
2024 results by precinct
2024 precinct map of Somerset CountyPrecinct-level 2024 presidential results for Somerset County, with each precinct boundary colored by Democratic-vs-Republican margin.
—
Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | No data |
| 1880 | No data |
| 1884 | No data |
| 1888 | No data |
| 1892 | +0.9% |
| 1896 | −24.4% |
| 1900 | −15.9% |
| 1904 | −17.9% |
| 1908 | −20.9% |
| 1912 | +14.6% |
| 1916 | −12.5% |
| 1920 | −43.9% |
| 1924 | −48.4% |
| 1928 | −33.6% |
| 1932 | −10.5% |
| 1936 | +0.6% |
| 1940 | −10.0% |
| 1944 | −16.7% |
| 1948 | −21.5% |
| 1952 | −26.8% |
| 1956 | −44.3% |
| 1960 | −11.9% |
| 1964 | +21.1% |
| 1968 | −19.0% |
| 1972 | −35.0% |
| 1976 | −16.7% |
| 1980 | −25.2% |
| 1984 | −34.6% |
| 1988 | −28.5% |
| 1992 | −10.9% |
| 1996 | −1.1% |
| 2000 | −2.9% |
| 2004 | −4.3% |
| 2008 | +6.1% |
| 2012 | +5.6% |
| 2016 | +12.8% |
| 2020 | +21.2% |
| 2024 | +13.8% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 98,790 | 74,101 | 178,343 | ||
| D | 111,173 | 71,996 | 184,810 | ||
| D | 85,689 | 65,505 | 157,092 | ||
| D | 74,592 | 66,603 | 143,180 | ||
| D | 79,321 | 70,085 | 151,078 | ||
| R | 66,476 | 72,508 | 140,279 | ||
| R | 56,232 | 59,725 | 120,377 | ||
| R | 50,673 | 51,869 | 112,929 | ||
| R | 42,867 | 56,044 | 120,813 | ||
| R | 37,406 | 67,658 | 106,193 | ||
| R | 31,924 | 66,303 | 99,296 | ||
| R | 29,470 | 52,591 | 91,928 | ||
| R | 36,258 | 51,260 | 89,691 | ||
| R | 26,537 | 56,524 | 85,605 | ||
| R | 27,580 | 42,459 | 78,475 | ||
| D | 43,659 | 28,416 | 72,270 | ||
| R | 28,489 | 36,200 | 64,863 | ||
| R | 14,529 | 37,930 | 52,789 | ||
| R | 18,007 | 31,239 | 49,320 | ||
| R | 14,104 | 22,034 | 36,862 | ||
| R | 14,467 | 20,266 | 34,770 | ||
| R | 16,490 | 20,169 | 36,755 | ||
| D | 15,987 | 15,806 | 31,887 | ||
| R | 12,345 | 15,317 | 28,273 | ||
| R | 8,120 | 16,386 | 24,580 | ||
| R | 4,143 | 12,986 | 18,260 | ||
| R | 4,192 | 10,962 | 15,435 | ||
| R | 3,653 | 4,707 | 8,451 | ||
| D | 3,146 | 2,068 | 7,402 | ||
| R | 3,271 | 5,043 | 8,485 | ||
| R | 3,195 | 4,633 | 8,029 | ||
| R | 3,183 | 4,438 | 7,878 | ||
| R | 2,608 | 4,388 | 7,291 | ||
| D | 3,408 | 3,342 | 6,975 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
Italian
12.9%
Irish
10.8%
German
8.9%
Polish
6.1%
English
5.3%
American
3.3%
French
1.1%
African American
7.6%
Multiple ancestry combinations reported; no single grouping above 1%.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
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.
2024 ACS
Age distribution by sex
Median age: 41.8 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.
2024 ACS
Median household income
Inflation-adjusted dollars
$140,374
Somerset County ranks in the top 0.5% of US counties.
Somerset County$140,374
New Jersey$103,556
United States$80,734
Somerset County ranks in the top 0.5% of US counties by median household income.
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
5.4%
Child poverty is below the national average.
Children under 186.7%
Working age (18–64)4.7%
Seniors (65+)8.4%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
65.3%
speak English only
Spanish13.0%
Other Indo-European11.5%
Asian & Pacific Islander8.7%
Other languages1.5%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 49.8% of residents not counted as adherents by any reporting body.
Somerset County's transformation tracks a broader pattern in affluent suburban New Jersey: college-educated voters shifted the presidential margin to D+13.9 in 2024, a reversal from its Republican-leaning baseline of the early 2000s.
Somerset County has leaned Democratic in recent presidential elections, reaching a Democratic margin of twenty-one points in 2020. Between 2020 and 2024 it moved seven points toward the Republican candidate — part of the sharpest rightward shift recorded among any group of places in the country.
Its demographics describe the shift: a 52% non-Hispanic-white share, a median household income of $140,374, and a population of 349,846. The county's voting pattern over the last decade is most similar to that of Prince William County and Henrico County.
Most similar counties
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.
Somerset County, New Jersey. Akashic. https://akashic.app/county/34035/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Frequently asked questions
How did Somerset County, New Jersey vote in 2024?
In 2024, Somerset County, New Jersey voted Democratic by 13.8 points (D+14), carried by the Democratic candidate. Out of 178,343 votes cast, 98,790 went Democratic and 74,101 went Republican.
What is Somerset County, New Jersey's political typology?
Akashic places Somerset County, New Jersey in the "New American" typology — Communities where a large share of households speak a language other than English — multilingual, Democratic-leaning overall, yet the hardest-swinging bloc toward the Republican Party in 2024. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the county has voted Democratic 9 times, Republican 25 times, and other 0 times.
When did Somerset County, New Jersey last vote Republican?
The most recent presidential election in which Somerset County, New Jersey voted Republican was 2004.
How many people live in Somerset County, New Jersey?
Somerset County, New Jersey has a population of 349,846 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Somerset County, New Jersey?
Median household income in Somerset County, New Jersey is $140,374 — above the national median of $80,734. The New Jersey state median is $103,556.
What is the political history of Somerset County, New Jersey?
Akashic tracks 38 presidential elections in Somerset County, New Jersey from 1876 to 2024. Of those, 9 went Democratic and 25 went Republican. The county's typology — "New American" — captures where that record, its demographics, and its recent swing place it among American communities.