Mendham, New Jersey Demographics & Population 2026
During the 2020–2024 ACS period, Mendham, New Jersey had a total population of 4,973, the 296th largest borough in New Jersey, with a median household income of $211,944, which is 105% higher than the state average. The poverty rate is 3.5%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 105% above the state average — one of the wealthiest communities in New Jersey.
- An exceptionally low poverty rate of 3.5% — among the lowest in New Jersey.
- 80.7% of adults hold a bachelor's degree or higher — top 10% in New Jersey.
Mendham Quick Facts
How Mendham Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 4,977 | 4,973 | -0.1% |
| Median household income | $223,750 | $211,944 | -5.3% |
| Median home value | $764,000 | $819,800 | +7.3% |
How Mendham Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 66 | National average: 61
Education
Educational Attainment (Adults 25+)
Mendham Rankings in New Jersey
Explore New Jersey Rankings
Other Cities in Morris County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Parsippany | 21,345 | $99,405 | 6.7% | $555,400 |
| Morristown | 20,453 | $121,340 | 7.8% | $567,600 |
| Dover | 18,563 | $73,737 | 14.2% | $366,700 |
| Madison | 16,447 | $171,471 | 3.2% | $943,200 |
| Florham Park | 13,564 | $158,696 | 8.7% | $791,400 |
| Lake Hiawatha | 11,018 | $104,663 | 3.4% | $428,600 |
| Pompton Plains | 10,971 | $117,959 | 5.6% | $539,000 |
| Lincoln Park | 10,957 | $123,397 | 2.9% | $443,300 |
| Budd Lake | 10,650 | $114,154 | 4.6% | $456,100 |
| Lake Hopatcong | 10,259 | $117,625 | 4.0% | $424,200 |
Cities Similar to Mendham
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Demarest | 4,911 | $208,036 | $1,114,600 | 75.9% | 1.1% |
| East Freehold | 5,096 | $189,219 | $645,900 | 62.5% | 4.7% |
| Harrington Park | 4,954 | $180,500 | $776,900 | 73.1% | 6.8% |
| Brielle | 4,956 | $172,250 | $849,100 | 66.8% | 1.3% |
| Troy Hills | 5,179 | $183,707 | $650,500 | 63.5% | 6.0% |
Population Overview
Mendham is a small community located in New Jersey, within Morris County. The total population is 4,973. It ranks as the 296th most populous out of 700 Census-designated places in New Jersey.
Age Demographics
The median age in Mendham is 46.5 years. This is 16% higher than the state median of 40.1 years.
Economy, Income & Housing
The median household income in Mendham is $211,944. This is 105% higher than the state median of $103,556. It is also 163% higher than the national median of $80,734. The poverty rate stands at 3.5%. This is 64% lower than the state poverty rate of 9.7%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 3.4%. This is 46% lower than the state rate of 6.3%. The median home value is $819,800. Housing costs are 80% higher than the state median of $454,400. The home-value-to-income ratio is 3.9x. 85.9% of occupied housing units are owner-occupied. This homeownership rate is 35% higher than the state average of 63.8%.
Race & Ethnicity
The largest racial or ethnic group in Mendham is White (non-Hispanic), making up 79.1% of the population. Asian residents account for 6.6%. The White (non-Hispanic) population is significantly higher than the state average (79.1% vs 50.9%). The Black or African American population (0.4%) is well below the state average of 12.2%. The Hispanic or Latino population (6.3%) is well below the state average of 22.5%.
Education
80.7% of residents aged 25 and older hold a bachelor's degree or higher. This places Mendham in the top 10% of all cities in the state for educational attainment. This is 85% higher than the state rate of 43.6%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 98.7%. Notably, 39.9% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Mendham, New Jersey is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against New Jersey state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 700 Census-designated places in New Jersey. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Mendham, New Jersey?
Mendham, New Jersey has a population of 4,973 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Mendham, NJ?
The median household income in Mendham is $211,944, which is 163% higher than the national median of $80,734.
What is the poverty rate in Mendham, NJ?
The poverty rate in Mendham is 3.5%. This means approximately 171 residents live below the federal poverty line.
What is the racial makeup of Mendham, New Jersey?
Mendham's population is 79.1% White, 0.4% Black, 6.3% Hispanic/Latino, and 6.6% Asian.
What is the median home value in Mendham, NJ?
The median home value in Mendham is $819,800. The home-value-to-income ratio is 3.9x.
How educated is Mendham, New Jersey?
80.7% of adults (25+) in Mendham hold a bachelor's degree or higher, and 39.9% hold a graduate or professional degree.