HarrisDemocratic50.0%1,633TrumpRepublican47.1%1,539OtherAll other candidates2.8%93
D+2.9- Lead
- 94
- Total
- 3,265
- vs nation
- D+4.4
- Turnout
- —
Akashiccity
Mendham, NJ
Office (updates table and map)
President margin by year
Place winner margin
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
President results by year
Vote totals, margins, and source status
BidenDemocratic52.5%1,825TrumpRepublican46.7%1,623OtherAll other candidates0.8%28
D+5.8- Lead
- 202
- Total
- 3,476
- vs nation
- D+1.4
- Turnout
- —
ClintonDemocratic44.5%1,288TrumpRepublican49.9%1,445OtherAll other candidates5.6%162
R+5.4- Lead
- 157
- Total
- 2,895
- vs nation
- R+7.5
- Turnout
- —
ObamaDemocratic34.1%857RomneyRepublican64.7%1,628OtherAll other candidates1.2%31
R+30.6- Lead
- 771
- Total
- 2,516
- vs nation
- R+34.5
- Turnout
- —
ObamaDemocratic41.5%1,243McCainRepublican57.7%1,726OtherAll other candidates0.8%24
R+16.1- Lead
- 483
- Total
- 2,993
- vs nation
- R+23.4
- Turnout
- —
KerryDemocratic38.0%1,084BushRepublican61.9%1,767OtherAll other candidates0.2%5
R+23.9- Lead
- 683
- Total
- 2,856
- vs nation
- R+21.5
- Turnout
- —
Key facts
- 2024 presidential margin
- D+2.9MIT Election Lab
- Population
- 4,9732024 5-year
- Median household income
- $211,9442024 5-year
- White (non-Hispanic)
- 81.8%2024 5-year
- Black
- 0.0%2024 5-year
- Hispanic / Latino
- 5.6%2024 5-year
- Peak Democratic margin
- D+5.8 in 2020MIT Election Lab
- Peak Republican margin
- R+30.6 in 2012MIT Election Lab
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 2004 | −23.9% |
| 2008 | −16.1% |
| 2012 | −30.6% |
| 2016 | −5.4% |
| 2020 | +5.8% |
| 2024 | +2.9% |
DemocraticRepublican
6 presidential elections
| Year | Won | Democratic | Republican | Other | Margin | Swing | vs U.S. | Total |
|---|---|---|---|---|---|---|---|---|
| D | 50.0%Harris1,633 | 47.1%Trump1,539 | 2.8% | D+2.9 | R+2.9 | D+4.4 | 3,265 | |
| D | 52.5%Biden1,825 | 46.7%Trump1,623 | 0.8% | D+5.8 | D+11.2 | D+1.4 | 3,476 | |
| R | 44.5%Clinton1,288 | 49.9%Trump1,445 | 5.6% | R+5.4 | D+25.2 | R+7.5 | 2,895 | |
| R | 34.1%Obama857 | 64.7%Romney1,628 | 1.2% | R+30.6 | R+14.5 | R+34.5 | 2,516 | |
| R | 41.5%Obama1,243 | 57.7%McCain1,726 | 0.8% | R+16.1 | — | R+23.4 | 2,993 | |
| R | 38.0%Kerry1,084 | 61.9%Bush1,767 | 0.2% | R+23.9 | — | R+21.5 | 2,856 |
Federal and statewide elections · 1 House · 1 Senate
U.S. House
Each row shows U.S. House votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.
| Year | Vote lead | Democratic | Republican | Total |
|---|---|---|---|---|
| 2024 | R | 47.0%1,844 | 53.0%2,076 | 3,920 |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2024 | O | 0.0%0 | 0.0%0 | 3,129 |
Mendham Borough sits in New Jersey's wealthy Morris County commuter belt, where high household incomes and strong educational attainment have historically shaped a competitive, swing-leaning electorate that defies simple partisan labels.
Across the recorded series it reached a Democratic high of 5.8 points in 2020 and a Republican high of 30.6 points in 2012. Between 2020 and 2024 the city moved 2.9 points toward the Republican candidate; the 2024 margin was 2.9 points.
A population of 4,973, a 82% non-Hispanic-white share, and a median household income of $211,944 describe the city.
Browse places by community — income, education, race & ethnicity, language — all community cuts →
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.
Mendham, New Jersey. Akashic. https://akashic.app/city/3445330/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
New Jersey at the ballot boxAll elections →
Frequently asked questions
How did Mendham, New Jersey vote in 2024?
In 2024, Mendham, New Jersey voted Democratic by 2.9 points (D+2.9), carried by the Democratic candidate. Out of 3,265 votes cast, 1,633 went Democratic and 1,539 went Republican.
When did Mendham, New Jersey last vote Republican?
The most recent presidential election in which Mendham, New Jersey voted Republican was 2016.
How many people live in Mendham, New Jersey?
Mendham, New Jersey has a population of 4,973 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Mendham, New Jersey?
Median household income in Mendham, New Jersey is $211,944 — above the national median of $80,734. The New Jersey state median is $103,556.
What is the political history of Mendham, New Jersey?
Akashic tracks 6 presidential elections in Mendham, New Jersey from 2004 to 2024. Of those, 2 went Democratic and 4 went Republican.