Monmouth County, New Jersey: Diversifying Metro county. In 2024, voted R+11%. Republican peak: R+44 in 1956.
Key facts
- 2024 presidential margin
- R+11MIT Election Lab
- Political typology
- Diversifying MetroAkashic typology
- Population
- 645,3532024 5-year
- Median household income
- $124,8452024 5-year
- White (non-Hispanic)
- 74.4%2024 5-year
- Black
- 6.0%2024 5-year
- Hispanic / Latino
- 12.9%2024 5-year
- Peak Democratic margin
- D+30 in 1912MIT Election Lab
- Peak Republican margin
- R+44 in 1956MIT Election Lab
- Most similar
- Cape May County, NJ · similarity 0.91
2024 results by precinct
2024 precinct map of Monmouth CountyPrecinct-level 2024 presidential results for Monmouth 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 | +7.7% |
| 1896 | −14.6% |
| 1900 | −9.2% |
| 1904 | −9.0% |
| 1908 | −14.7% |
| 1912 | +30.3% |
| 1916 | −4.0% |
| 1920 | −37.4% |
| 1924 | −37.2% |
| 1928 | −31.9% |
| 1932 | −6.8% |
| 1936 | −3.2% |
| 1940 | −15.5% |
| 1944 | −17.4% |
| 1948 | −26.3% |
| 1952 | −32.8% |
| 1956 | −44.1% |
| 1960 | −13.2% |
| 1964 | +21.6% |
| 1968 | −10.3% |
| 1972 | −32.5% |
| 1976 | −10.4% |
| 1980 | −23.0% |
| 1984 | −31.4% |
| 1988 | −23.0% |
| 1992 | −6.0% |
| 1996 | +8.2% |
| 2000 | +4.6% |
| 2004 | −10.0% |
| 2008 | −3.7% |
| 2012 | −5.0% |
| 2016 | −9.3% |
| 2020 | −2.8% |
| 2024 | −11.3% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 156,382 | 197,409 | 361,596 | ||
| R | 181,291 | 191,808 | 375,807 | ||
| R | 137,181 | 166,723 | 317,750 | ||
| R | 133,820 | 148,000 | 285,667 | ||
| R | 148,737 | 160,433 | 312,616 | ||
| R | 133,773 | 163,650 | 299,939 | ||
| D | 131,476 | 119,291 | 262,141 | ||
| D | 120,414 | 99,975 | 248,961 | ||
| R | 101,750 | 117,715 | 266,116 | ||
| R | 91,844 | 147,320 | 240,957 | ||
| R | 79,382 | 152,595 | 232,909 | ||
| R | 71,328 | 120,173 | 211,971 | ||
| R | 88,956 | 110,104 | 202,790 | ||
| R | 63,176 | 124,830 | 189,977 | ||
| R | 69,669 | 87,311 | 170,456 | ||
| D | 95,320 | 61,367 | 157,055 | ||
| R | 62,434 | 81,382 | 144,060 | ||
| R | 32,329 | 83,828 | 116,751 | ||
| R | 37,006 | 73,228 | 110,491 | ||
| R | 30,507 | 52,908 | 85,033 | ||
| R | 34,720 | 49,349 | 84,122 | ||
| R | 36,298 | 49,675 | 86,047 | ||
| R | 38,914 | 41,460 | 80,767 | ||
| R | 35,219 | 40,467 | 76,741 | ||
| R | 24,286 | 47,046 | 71,454 | ||
| R | 14,931 | 34,451 | 52,482 | ||
| R | 12,975 | 28,818 | 42,336 | ||
| R | 10,729 | 11,624 | 22,590 | ||
| D | 9,799 | 3,683 | 20,182 | ||
| R | 9,252 | 12,519 | 22,239 | ||
| R | 9,032 | 10,885 | 20,534 | ||
| R | 8,568 | 10,363 | 19,514 | ||
| R | 7,799 | 10,611 | 19,197 | ||
| D | 9,013 | 7,676 | 17,277 | ||
| — | — | — | — | ||
| — | — | — | — | ||
| — | — | — | — | ||
| — | — | — | — |
Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
Italian
22.5%
Irish
19.2%
German
10.6%
English
6.2%
Polish
5.7%
American
4.0%
Scottish
1.2%
African American
4.8%
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: 43.2 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
$124,845
Monmouth County ranks in the top 0.5% of US counties.
Monmouth County$124,845
New Jersey$103,556
United States$80,734
Monmouth 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
6.5%
Child poverty is below the national average.
Children under 187.2%
Working age (18–64)6.1%
Seniors (65+)8.3%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
81.6%
speak English only
Spanish7.8%
Other Indo-European6.8%
Asian & Pacific Islander2.8%
Other languages0.9%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 42.7% of residents not counted as adherents by any reporting body.
Monmouth's mix of affluent Shore towns, commuter suburbs, and rural inland townships once made it a competitive swing county, but its presidential margins have widened toward Republicans by double digits over the past two election cycles.
The Democratic margin here reached thirty points in 1912. Between 2020 and 2024 the county moved nine points toward the Republican candidate; the 2024 margin was eleven points.
A population of 645,353, a 74% non-Hispanic-white share, and a median household income of $124,845 describe the county. The county's voting pattern over the last decade is most similar to that of Cape May County and Dorchester 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.
Monmouth County, New Jersey. Akashic. https://akashic.app/county/34025/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More in New Jersey
More diversifying metro counties
Frequently asked questions
How did Monmouth County, New Jersey vote in 2024?
In 2024, Monmouth County, New Jersey voted Republican by 11.3 points (R+11), carried by the Republican candidate. Out of 361,596 votes cast, 156,382 went Democratic and 197,409 went Republican.
What is Monmouth County, New Jersey's political typology?
Akashic places Monmouth County, New Jersey in the "Diversifying Metro" typology — Mid-size metropolitan counties growing more diverse and trending Democratic. 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 5 times, Republican 29 times, and other 0 times.
When did Monmouth County, New Jersey last vote Democratic?
The most recent presidential election in which Monmouth County, New Jersey voted Democratic was 2000.
How many people live in Monmouth County, New Jersey?
Monmouth County, New Jersey has a population of 645,353 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Monmouth County, New Jersey?
Median household income in Monmouth County, New Jersey is $124,845 — above the national median of $80,734. The New Jersey state median is $103,556.
What is the political history of Monmouth County, New Jersey?
Akashic tracks 38 presidential elections in Monmouth County, New Jersey from 1876 to 2024. Of those, 5 went Democratic and 29 went Republican. The county's typology — "Diversifying Metro" — captures where that record, its demographics, and its recent swing place it among American communities.