Borough in Morris County, New Jersey · 2.6 sq mi · 1,775 people per sq mi
About 4,700 people live in Mountain Lakes. The typical household earns $250,001, and the median resident is 43.4 years old.
2026 projection
From 4,467 in 2020
Poverty rate 1.26%
Men 39.3 · Women 45
1930–2026
4,692
2026 projection
5% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1930–2026
4,692
2026 projection
5% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 4,692 | +43 | 0.92% |
|---|---|---|---|
| 2025 | 4,649 | +10 | 0.22% |
| 2024 | 4,639 | 0 | 0.00% |
| 2023 | 4,639 | +27 | 0.59% |
| 2022 | 4,612 | +35 | 0.76% |
| 2021 | 4,577 | +110 | 2.46% |
| 2020 | 4,467 | +251 | 5.95% |
| 2019 | 4,216 | -45 | 1.06% |
| 2018 | 4,261 | -29 | 0.68% |
| 2017 | 4,290 | +4 | 0.09% |
Showing 10 of 25 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 46 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 79 residents
70% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 70% | 71% | 68% |
| Never married | 19% | 22% | 17% |
| Divorced | 8% | 7% | 9% |
| Widowed | 3% | <1% | 6% |
| Separated | 0% | 0% | 0% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau