
Mountain Lakes
- County:
- Morris County
- County Seat:
- No
- Area (mi²):
- 2.644
- State:
- New Jersey
Mountain Lakes is a borough located in Morris County, New Jersey. Mountain Lakes has a 2025 population of 4,704. Mountain Lakes is currently growing at a rate of 1.03% annually and its population has increased by 5.38% since the most recent census, which recorded a population of 4,464 in 2020.
The average household income in Mountain Lakes is $327,881 with a poverty rate of 1.32%. The median age in Mountain Lakes is 43.6 years: 36.1 years for males, and 45.1 years for females.