Mountain Lakes borough, New Jersey Demographics & Population 2026
As of 2026, Mountain Lakes borough, New Jersey has a total population of 4,535, the 316th largest city in New Jersey, with a median household income of $250,001, which is 147% higher than the state average. The poverty rate is 1.3%.
Key Takeaways
- Household income is 147% above the state average — one of the wealthiest communities in New Jersey.
- An exceptionally low poverty rate of 1.3% — among the lowest in New Jersey.
- 84.4% of adults hold a bachelor's degree or higher — top 10% in New Jersey.
- Near full employment with an unemployment rate of just 2.1%.
Mountain Lakes borough Quick Facts
How Mountain Lakes borough Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
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: 65 | National average: 60
Education
Educational Attainment (Adults 25+)
Mountain Lakes borough Rankings in New Jersey
Explore New Jersey Rankings
Other Cities in Morris County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Morristown town | 20,256 | $115,409 | 9.2% | $552,800 |
| Dover town | 18,420 | $70,519 | 11.6% | $347,100 |
| Madison borough | 16,464 | $168,469 | 2.8% | $882,900 |
| Florham Park borough | 13,134 | $147,714 | 7.8% | $722,700 |
| Lincoln Park borough | 10,901 | $119,000 | 3.4% | $419,500 |
| Kinnelon borough | 9,971 | $178,102 | 2.0% | $682,600 |
| Chatham borough | 9,219 | $250,001 | 2.5% | $944,300 |
| Boonton town | 8,803 | $100,417 | 7.5% | $475,300 |
| Butler borough | 8,072 | $110,375 | 9.3% | $425,900 |
| Wharton borough | 7,254 | $92,548 | 18.8% | $348,100 |
Cities Similar to Mountain Lakes borough
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Ho-Ho-Kus borough | 4,230 | $250,001 | $1,032,800 | 81.0% | 0.1% |
| Mendham borough | 4,977 | $223,750 | $764,000 | 79.2% | 2.2% |
| Lyons CDP | 5,444 | $243,958 | $936,000 | 66.6% | 1.9% |
| Englewood Cliffs borough | 5,330 | $222,192 | $1,232,700 | 76.9% | 4.7% |
| Barclay CDP | 4,456 | $162,241 | $438,400 | 71.3% | 6.9% |
Population Overview
Mountain Lakes borough is a small community located in New Jersey, within Morris County. The total population is 4,535. It ranks as the 316th most populous out of 700 cities and towns in New Jersey.
Age Demographics
The median age in Mountain Lakes borough is 43.6 years. This is 9% higher than the state median of 40.1 years. With 33.9% of the population under 18, Mountain Lakes borough has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in Mountain Lakes borough is $250,001. This is 147% higher than the state median of $101,050. Compared to the national median of $78,538, household income here is 218% higher. The poverty rate stands at 1.3%. This is 86% lower than the state poverty rate of 9.8%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 2.1%. This is 66% lower than the state rate of 6.2%. The median home value is $915,100. Housing costs are 114% higher than the state median of $427,600. The home-value-to-income ratio is 3.7x. 97.1% of occupied housing units are owner-occupied. This homeownership rate is 52% higher than the state average of 63.7%.
Race & Ethnicity
The largest racial or ethnic group in Mountain Lakes borough is White (non-Hispanic), making up 78.0% of the population. Asian residents account for 13.3%. The White (non-Hispanic) population is significantly higher than the state average (78.0% vs 51.9%). The Hispanic or Latino population (3.6%) is well below the state average of 21.9%.
Education
84.4% of residents aged 25 and older hold a bachelor's degree or higher. This places Mountain Lakes borough in the top 10% of all cities in the state for educational attainment. This is 97% higher than the state rate of 42.9%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 98.0%. Notably, 40.3% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Mountain Lakes borough, New Jersey is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. 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. For official data, visit data.census.gov.
Free data download: Get all New Jersey city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of Mountain Lakes borough, New Jersey?
Mountain Lakes borough, New Jersey has a population of 4,535 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Mountain Lakes borough, NJ?
The median household income in Mountain Lakes borough is $250,001, which is 218% higher the national median of $78,538.
What is the poverty rate in Mountain Lakes borough, NJ?
The poverty rate in Mountain Lakes borough is 1.3%. This means approximately 60 residents live below the federal poverty line.
What is the racial makeup of Mountain Lakes borough, New Jersey?
Mountain Lakes borough's population is 78.0% White, 0.0% Black, 3.6% Hispanic/Latino, and 13.3% Asian.
What is the median home value in Mountain Lakes borough, NJ?
The median home value in Mountain Lakes borough is $915,100. The home-value-to-income ratio is 3.7x.
How educated is Mountain Lakes borough, New Jersey?
84.4% of adults (25+) in Mountain Lakes borough hold a bachelor's degree or higher, and 40.3% hold a graduate or professional degree.