Mendham Township, NJ demographics:
population, income, and more

Total population
10,893
0.1% year-over-year change
Median household income
$250,001/yr
57.2% year-over-year change
Housing units
4,273
1.1% year-over-year change

Mendham population

How many people live in Mendham

Mendham is home to 10,893 residents, according to the most recent Census data. Gender-wise, 48.4% of Mendham locals are male, and 51.6% are female.

Total population
10,893
0.1% year-over-year change
Gender ratio
Male
48.4%
5,275
Female
51.6%
5,618
Value Percent YoY change
Male 5,275 48.4% -1.4%
Female 5,618 51.6% 1.4%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Mendham is 40, with the population distributed as follows: about 16.8% are children under 15, then 13.2% are in the 15 to 24 age group. Adults between 25 and 44 make up 20.8% of the population, while another 31.2% fall into the 45 to 64 bracket. Finally, around 18% are 65 or older.

Median age
40
Age breakdown
Under 15
16.8%
15 to 24
13.2%
25 to 44
20.8%
45 to 64
31.2%
Over 65
18%
Value Percent YoY change
Under 15 1,824 16.8% 1.7%
15 to 24 1,436 13.2% -3.4%
25 to 44 2,266 20.8% 0.2%
45 to 64 3,400 31.2% -0.1%
Over 65 1,966 18% 1.2%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Mendham, 85.1% of the population are US-born citizens, while 8.5% have gained naturalized citizenship. At the same time, 6.4% of residents are non-citizens. As for race, 75.8% of locals are Caucasian, 2.1% are African American and 4.6% have Asian roots. There’s also a share of 11.7% that includes residents with two or more races.

Citizenship
U.S.-born citizens
85.1%
Non-U.S.-born citizens
8.5%
Non-citizens
6.4%
Value Percent YoY change
U.S.-born citizens 9,271 85.1% 0.0%
Non-U.S.-born citizens 924 8.5% -4.0%
Non-citizens 698 6.4% 6.4%
Racial breakdown
White
75.8%
Black or African American
2.1%
American Indian and Alaska Native
0%
Asian
4.6%
Native Hawaiian and other Pacific Islander
0%
Two or more races
11.7%
Other
5.8%
Value Percent
White 8,251 75.8%
Black or African American 230 2.1%
American Indian and Alaska Native 5 0%
Asian 499 4.6%
Two or more races 1,278 11.7%
Other 629 5.8%

Households in Mendham

A peek inside Mendham households

Mendham has 4,080 households, with an average of 3 members in each. Of these, 70.5% are families, while the remaining 29.5% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
4,080
0.8% year-over-year change
Average people per household
3
Non-family households
1,202
Family households
2,878
Value Percent YoY change
Non-family households 1,202 29.5% 1.9%
Family households 2,878 70.5% 0.4%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Mendham

The housing landscape of Mendham

Mendham's housing consists of 4,273 units, with 72.4% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 9% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 0.2% of the housing landscape.

Housing units
4,273
1.1% year-over-year change
Housing types
Value Percent
1 unit, detached 3,095 72.4%
1 unit, attached 383 9%
2 units 99 2.3%
3 or 4 units 140 3.3%
5 to 9 units 90 2.1%
10 to 19 units 127 3%
20 to 49 units 134 3.1%
50 or more units 199 4.7%
Mobile home 7 0.2%
Homes built since 2020
15
87.5% year-over-year change

The age of buildings in Mendham

In Mendham, the median construction year is 1974. About 14.9% of homes were built before the 1940s, with another 3.6% going up by 1949. Most development happened in the second half of the 20th century. Then, 8.1% of homes were added from 2000 to 2009, 5.5% between 2010 and 2019, and 0.4% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 637 14.9% 8.0%
Built between 1940 and 1949 156 3.6% -13.8%
Built between 1950 and 1959 441 10.3% -5.0%
Built between 1960 and 1969 682 16% 1.9%
Built between 1970 and 1979 768 18% 3.4%
Built between 1980 and 1989 539 12.6% -5.4%
Built between 1990 and 1999 455 10.6% -4.0%
Built between 2000 and 2009 346 8.1% 3.0%
Built between 2010 and 2019 234 5.5% 23.2%
Built in 2020 or later 15 0.4% 87.5%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Mendham occupancy rates

Out of the 4,080 occupied housing units in Mendham, 78.8% are owner-occupied, while 21.2% are lived in by tenants. Meanwhile, 4.5% of all homes on the local market sit vacant.

Occupied housing units
4,080
0.8% year-over-year change
Occupancy breakdown
Renter occupied
866
Owner occupied
3,213
Value Percent YoY
change
Renter occupied 866 21.2% 0.1%
Owner occupied 3,213 78.8% 1.0%
Unoccupied housing units
4.5%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Mendham housing costs

Housing costs in Mendham come to a median of $3,947 per month, while tenants specifically pay a median gross rent of $3,501.

Median housing costs per month
$3,947/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Mendham
$3,501/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Mendham

Mendham education at a glance

About 14.2% of the population in Mendham went to high school, while 10.4% pursued college studies. Another 3.6% earned an associate degree and 38.8% hold a bachelor’s. Meanwhile, 31.3% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 146 1.7% 7.3%
High school diploma 1,198 14.2% -6.0%
College diploma 878 10.4% 0.0%
Associate degree 304 3.6% -2.9%
Bachelor's degree 3,282 38.8% -0.2%
Graduate degree 2,647 31.3% 1.8%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Mendham

How much people earn in Mendham

The average annual household income in Mendham was $300,641 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +3.4% change from the previous year. At the same time, the median income stood at $250,001, reflecting a +57.2% shift over the same period.

Average household income in Mendham
$300,641/year
3.5% year-over-year change
Median household income in Mendham
$250,001/year
57.2% year-over-year change

Mendham income by age

In Mendham, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $206,944. Those with someone between 45 and 64 in charge, often well established professionally, earn $250,001 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $93,293, while those led by someone over 65, many of whom may be retired, have about $140,547 in earnings. Overall, 96.1% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $93,293 -0.6%
25 - 44 $206,944 38.6%
45 - 64 $250,001 0.0%
Over 65 $140,547 9.8%
Above poverty level
10,243
Below poverty level
413
Value Percent YoY
change
Above poverty level 10,243 96.1% 0.2%
Below poverty level 413 3.9% 0.7%

Average renter income in Mendham

To get a better sense of what renters earn on average in Mendham, their median household income was $88,697 according to 2022 Census data. In addition, the rent-to-income ratio in the area, at 47.4%, shows what portion of their earnings goes toward housing expenses.

Renter median household income
$88,697
Rent-to-income ratio
47.4%
Understanding the rent-to-income ratio can help renters gauge if local housing costs align with their earnings. A ratio under 30% usually signals affordability, while exceeding this mark means rent is taking a larger-than-recommended bite out of income. That could make it harder for you to cover other costs like transportation, healthcare, or child care.

Employment in Mendham

Workforce and job types in Mendham

The job market in Mendham is powered by 5,734 working residents, spread across a range of industries and roles. 93.9% of the working population are employed in professional or administrative positions, while 6.1% are in hands-on or service-based jobs. Also, 14.2% run their own businesses, 65.5% are employed by private companies, and 12.3% work in the public sector.

Workforce demographics

Working population
5,734
0.1% year-over-year change
White collar
5,383
Blue collar
352
Value Percent YoY change
White collar 5,383 93.9% 1.2%
Blue collar 352 6.1% -14.6%
Employer type
Self employees
14.2%
Private companies
65.5%
Governmental workers
12.3%
Not for profit companies
8%
Value Percent YoY change
Self employees 815 14.2% 1.2%
Private companies 3,757 65.5% -0.1%
Governmental workers 707 12.3% -1.8%
Not for profit companies 456 8% 2.9%
Unemployment rate
3.9%
7.4% year-over-year change

Available workforce

The unemployment rate in Mendham stands at 3.9%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Mendham

How people get around in Mendham

In Mendham, the average commute time is 27 minutes. Commuting methods vary: 90.5% of residents travel by personal vehicle and 3.4% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Commute time
27 min
-32.5% year-over-year change
Means of transportation
Value Percent YoY change
Car 3,515 90.5% -1.8%
Taxicab 10 0.3% 66.7%
Bus or trolleybus 25 0.6% -13.8%
Railroad 185 4.8% 10.1%
Motorcycle 2 0% N/A
Bicycle 13 0.3% 0.0%
Walk 133 3.4% -6.3%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Mendham by zipcode?

Zipcode Population Number of households Median income Average income
07970 215 58 $250,001 $395,776
07926 161 50 $250,001 $188,810
07931 2,985 1,191 $201,078 $328,980
07945 9,690 3,497 $250,001 $321,621
07960 46,702 18,575 $160,334 $225,910

Explore more communities

FAQs about Mendham demographics 

What is the total population of Mendham?

Mendham has a total population of 10,893 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +0.1% compared to a year ago.

What is the gender ratio in Mendham?

The gender ratio in Mendham is as follows:
  • 48.4% males (5,275 residents)
  • 51.6% females (5,618 residents)

What is the median age in Mendham?

The median age in Mendham is 40.

What is the age distribution of the population in Mendham?

The age distribution in Mendham is as follows:
  • Under 15: 16.8% (1,824 residents)
  • Ages 15-24: 13.2% (1,436 residents)
  • Ages 25-44: 20.8% (2,266 residents)
  • Ages 45-64: 31.2% (3,400 residents)
  • Over 65: 18% (1,966 residents)

What is the racial and ethnic makeup of Mendham?

The racial and ethnic makeup of Mendham is as follows:
  • White: 75.8% (8,251 residents)
  • Black or African American: 2.1% (230 residents)
  • American Indian and Alaska Native: 0% (5 residents)
  • Asian: 4.6% (499 residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 11.7% (1,278 residents)
  • Other: 5.8% (629 residents)

What percentage of the population in Mendham are U.S.-born citizens?

U.S.-born citizens represent 85.1% of the population in Mendham.

How many housing units are there in Mendham?

There are 4,273 housing units in Mendham, reflecting a +1.1% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Mendham and what is the average household size?

Mendham has a total of 4,080 households, with an average of 3 people in each.

What is the median household income in Mendham?

Mendham has a median household income of $250,001, representing a +57.2% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Mendham?

The employment rate is 96.1% in Mendham, with a workforce of 5,734 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 93.9% (5,383 residents)
  • Blue-collar workers: 6.1% (352 residents)

Places of employment:
  • Self-employed: 14.2% (815 residents)
  • Private companies: 65.5% (3,757 residents)
  • Governmental workers: 12.3% (707 residents)
  • Not-for-profit companies: 8% (456 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025