| Place Name | Mountain Lakes |
| Place Type | Borough |
| ZIP Code(s) | 07046 |
| County | Morris County |
| Area Code(s) | 862,973 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 4,206 |
| Population Growth Rate (2010-19) | 7.50% |
| Majority Ethnicity | White 82.02% |
| Metro/Micro Stats Area | New York-Newark-Jersey City, NY-NJ-PA |
| US Congressional District(s) | New Jersey 11th |
| State Assembly Districts | 25,26 |
| State Senate Districts | 25,26 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 82.02% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 14.47% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 3.51% |