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| City | Mountain Lake |
| State | New Jersey (NJ) |
| County | Warren |
| Country | United States of America |
| Timezone | Eastern Time (America/New_York) |
| Latitude | 40.8614 |
| Longitude | -74.9858 |
| Population | 574 |
| Density | 194.0 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 07823 |
| Area Code | 732, 848 |
| County Seat | Belvidere |
| School District | Great Meadows Regional School District |
Mountain Lake is a locality in Warren County, New Jersey, United States. It is a small community with a population of 574. The population density is 194.0 people per km². Mountain Lake is located at 40.8614°N, 74.9858°W. It observes the Eastern Time (America/New_York) timezone.
Mountain Lake rests in a quiet fold of Warren County, a place where the land itself seems to sigh with the weight of years. It lies 13.2 miles west of Mount Olive, NJ (from Mount Olive, NJ: bearing 273°T), and is situated 3.7 miles west-south-west of Warren. Rolling hills, softened by the persistent green of mature woodlands, cup the namesake body of water, its surface a mirror to the ever-changing sky. The air here carries the scent of damp earth and pine needles, a clean, sharp fragrance that sharpens the senses. During late afternoon, the sun, when it deigns to break through the canopy, paints the forest floor in shifting mosaics of gold and shadow, a fleeting beauty that speaks of the deep, slow pulse of nature. The terrain, a gentle rise and fall, suggests a landscape shaped more by patient erosion than by dramatic upheaval, a place where the earth has had time to settle into its contours. The history of Mountain Lake is a quiet echo of agricultural endeavor, of families who worked this land and drew their sustenance from its generous, if demanding, soil. Before the advent of modern conveniences, this was a place of self-reliance, where the rhythm of the seasons dictated life's pace. Though no longer a primary hub for large-scale farming, the legacy persists in the well-maintained fields that still punctuate the woodlands, hinting at a past where barns and silos were prominent features on the horizon. The local economy, like many in this part of the state, has diversified, finding its footing in small businesses and the steady employment offered by nearby commercial centers, yet a certain groundedness, a connection to the land, remains a distinctive characteristic of Mountain Lake.
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This page provides an embedded street and satellite map of Mountain Lake, New Jersey — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 40.8614, -74.9858. Live weather conditions are sourced directly from the National Weather Service, with current observations and a 7-day forecast also powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while a Wikipedia summary or an editorially written description provides background on Mountain Lake and Warren County.
Detailed location data for Mountain Lake includes the ZIP code (07823), telephone area code (732, 848), county seat of Warren County (Belvidere), and school district assignment (Great Meadows Regional School District). These are among the most commonly searched location details for any US city or town.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity — ensuring the correct Mountain Lake is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.
| Page generated | July 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. Location verified by proximity — not name matching alone. |