Township · New Jersey
Mendham Township, New Jersey
Mendham Township, township, in Morris County, New Jersey. Mendham Township had 6,075 residents on July 1, 2025 by the Census Bureau's estimate, up 0.7% since 2020; the 2020 Census counted 6,016 and the ACS 2020-2024 5-year estimates put it at 6,018 (±45). GEOID 3402745360.
Residents, July 2025 estimate
6,075
Census Bureau estimate (no margin published)
2020 Census count: 6,016 · ACS 2020-2024: 6,018 ±45
Median household income
$250,000 or more
The survey's top or bottom value; no margin is published
New Jersey: $103,556
Median home value
$1,070,400
±$114,946 (90% margin)
New Jersey: $454,400
Median gross rent
$3,500 or more
The survey's top or bottom value; no margin is published
New Jersey: $1,720
Where is Mendham Township and what county is it in?
Mendham Township is a township in Morris County, New Jersey. It covers 17.8 square miles of land, 338 residents per square mile in 2020.
One place lies inside Mendham Township: Brookside (CDP, 1,767 in 2020).
Mendham Township is in the New York-Newark-Jersey City, NY-NJ metropolitan statistical area, which takes in 22 counties (Census Bureau delineation, July 2023).
Mendham Township is the same area as Census Tract 458.04 of Morris County: the tract's figures are Mendham Township's own.
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Mendham Township, and is it growing?
The Census Bureau estimates that 6,075 people lived in Mendham Township on July 1, 2025, up 0.7% since 2020, slower than New Jersey (+2.8%). The 2020 Census counted 6,016 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 6,018 (±45).
| Measure | Mendham Township | Morris County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 6,018±45 | 514,528 | +263 |
| Households | 2,064±208 | 193,245 | no clear change |
| Average household size | 2.90±0.29 | 2.62 | no clear change |
| Housing units | 2,142±206 | 199,506 | no clear change |
Mendham Township's population since 2000
From 5,400 in 2000 to 6,075 in 2025: up 12.5%. The 2000, 2010 and 2020 figures are census counts, each for Mendham Township as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Mendham Township?
The median resident of Mendham Township is 45.9 years old; 24.7% are under 18 and 17.0% are 65 or older. The largest group is non-Hispanic white residents at 78.4%, then Hispanic or Latino residents (of any race) at 7.8%. 11.1% of residents were born outside the United States.
| Measure | Mendham Township | Morris County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 45.9±1.9 | 42.6 | no clear change |
| Under 18 years | 24.7%±3.6 pts | 20.6% | – |
| 65 years and over | 17.0%±2.9 pts | 18.2% | – |
| Male | 50.7%±4.5 pts | 49.6% | – |
| Hispanic or Latino (any race) | 7.8%±4.4 pts | 16.0% | no clear change |
| White alone, not Hispanic | 78.4%±6.3 pts | 65.8% | no clear change |
| Black or African American alone, not Hispanic | 0.0%±0.2 pts | 3.0% | – |
| Asian alone, not Hispanic | 5.3%±2.5 pts | 10.7% | no clear change |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.7 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.7 pts | 0.0% | – |
| Two or more races, not Hispanic | 4.7%±3.4 pts | 3.7% | – |
| Some other race alone, not Hispanic | 3.8%±4.3 pts | 0.7% | – |
| Born outside the United States | 11.1%±3.4 pts | 19.8% | no clear change |
| Speak a language other than English at home (age 5+) | 15.5%±5.9 pts | 26.6% | – |
| Civilian veterans (age 18+) | 2.7%±1.3 pts | 3.4% | – |
| With a disability | 6.3%±2.0 pts | 9.0% | – |
| No health insurance coverage | 0.4%±0.5 pts | 4.7% | – |
| High school graduate or higher (age 25+) | 99.4%±0.6 pts | 94.9% | – |
| Bachelor's degree or higher (age 25+) | 77.4%±5.8 pts | 57.8% | no clear change |
| Graduate or professional degree (age 25+) | 36.5%±6.6 pts | 24.1% | – |
| Lived in the same house a year earlier | 93.2%±3.2 pts | 91.1% | – |
| Moved from another state in the past year | 1.0%±0.8 pts | 1.4% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Mendham Township earn?
Half of Mendham Township's 2,064 households earn less than $250,000 or more a year (), against $137,326 in Morris County and $103,556 in New Jersey. In 2015-2019 it was $241,580 in 2024 dollars; the margins of error cannot tell the two periods apart. 2.3% of residents live below the poverty line.
| Measure | Mendham Township | Morris County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $250,000 or more | $137,326 | no clear change |
| Mean household income | $354,067±$40,222 | $186,467 | – |
| Per capita income | $122,016±$14,945 | $71,044 | no clear change |
| People below the poverty line | 2.3%±1.2 pts | 4.9% | – |
| Children under 18 below the poverty line | 0.0%±3.0 pts | 5.2% | – |
| Households receiving SNAP | 0.0%±2.2 pts | 3.7% | – |
| Households with a computer | 100.0%±2.2 pts | 97.1% | – |
| Households with a broadband subscription | 99.4%±0.9 pts | 95.2% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Mendham Township?
Owners occupy 95.7% of Mendham Township's occupied homes and renters 4.3%. The median owner-occupied home is valued at $1,070,400 by its owner (±$114,946). The median renter pays $3,500 or more a month including utilities.
| Measure | Mendham Township | Morris County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $1,070,400±$114,946 | $582,500 | no clear change |
| Median gross rent | $3,500 or more | $1,904 | +$1,301 |
| Renters paying 35% or more of income on rent | 0.0%±38.5 pts | 38.4% | – |
| Median monthly owner costs, with a mortgage | $4,000 or more | $3,295 | – |
| Owner-occupied homes | 95.7%±3.4 pts | 74.3% | no clear change |
| Renter-occupied homes | 4.3%±3.4 pts | 25.7% | – |
| Housing units | 2,142±206 | 199,506 | no clear change |
| Homeowner vacancy rate | 0.0%±2.2 pts | 0.5% | – |
| Rental vacancy rate | 0.0%±36.9 pts | 3.3% | – |
| Single-family detached homes | 96.6%±2.8 pts | 65.1% | – |
| Mobile homes | 0.0%±2.1 pts | 0.3% | – |
| Built 2020 or later | 0.0%±2.1 pts | 0.9% | – |
| Built 2010 to 2019 | 4.6%±3.3 pts | 5.2% | – |
| Built 1939 or earlier | 9.7%±4.7 pts | 12.4% | – |
| Households with no vehicle | 0.6%±0.9 pts | 5.1% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Mendham Township building?
Builders took permits for 38 new housing units in Mendham Township in 2025 (38 in single-family houses; the permit office reported 4 of 12 months), 6.3 per 1,000 residents against 2.9 across New Jersey.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Mendham Township work and get to work?
60.6% of Mendham Township's workers drive alone and 25.8% work from home. The average trip to work takes 44.2 minutes.
| Measure | Mendham Township | Morris County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 65.8%±5.5 pts | 68.5% | – |
| Unemployment rate | 3.1%±2.5 pts | 5.2% | – |
| Drove alone to work | 60.6%±9.4 pts | 66.3% | – |
| Carpooled | 0.6%±0.7 pts | 5.6% | – |
| Public transportation | 4.8%±2.3 pts | 3.3% | – |
| Walked | 0.4%±0.6 pts | 1.5% | – |
| Worked from home | 25.8%±7.9 pts | 21.8% | +17.5 pts |
| Mean travel time to work | 44.2 min±10.3 | 29.8 min | +12.4 min |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Mendham Township?
1 census tract lies mostly in Mendham Township (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 458.04Morris County | 6,018 | $250,000 or more |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Mendham Township) · Census block assignment files
How does Mendham Township compare with other places in New Jersey?
By the Census Bureau's July 2025 estimates, Mendham Township is the 1,964th-most populous of the 16,079 U.S. towns and townships that have one and the 170th-most populous of 241 in New Jersey.
Mendham Township ranks 1st of 771 places in New Jersey with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 170th | 241 |
| Growth 2020-2025 (PEP) | 426th | 532 |
| Residents per square mile | 690th | 787 |
| Median household income | 1st | 771 |
| Per capita income | 13th | 785 |
| Median home value | 24th | 777 |
| Median gross rent | 1st | 701 |
| Poverty rate | 514th | 539 |
| Bachelor's degree or higher | 37th | 780 |
| Median age | 231st | 786 |
| Owner-occupied share | 61st | 777 |
| Work from home | 133rd | 695 |
| Travel time to work | 11th | 787 |
Mendham Township's figures with every place in New Jersey (CSV)
Every place in New Jersey, sortable · Compare Mendham Township with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Mendham Township?
20 of the 57 figures for Mendham Township on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Mendham Township are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.