Upper Greenwood Lake, New Jersey

Upper Greenwood Lake, New Jersey
Upper Greenwood Lake
Location in Passaic County
Upper Greenwood Lake
Location in Sussex County
Upper Greenwood Lake
Location in New Jersey
Upper Greenwood Lake
Location in the United States
Coordinates: 41°11′0″N 74°22′48″W / 41.18333°N 74.38000°W / 41.18333; -74.38000
Country United States
State New Jersey
CountyPassaic, Sussex
TownshipsWest Milford
Vernon
Area
 • Total
3.16 sq mi (8.19 km2)
 • Land2.74 sq mi (7.09 km2)
 • Water0.42 sq mi (1.09 km2)
Elevation
1,110 ft (340 m)
Population
 (2020)
 • Total
3,687
 • Density1,346.1/sq mi (519.72/km2)
Time zoneUTC−05:00 (Eastern (EST))
 • Summer (DST)UTC−04:00 (EDT)
ZIP Code
07421 (Hewitt)
Area codes973/862
FIPS code34-74930
GNIS feature ID2806211

Upper Greenwood Lake is a census-designated place (CDP) in Passaic and Sussex counties, in the U.S. state of New Jersey. As of the 2020 census, Upper Greenwood Lake had a population of 3,687. It includes residential neighborhoods around the northern and central parts of its namesake lake. It is primarily in West Milford Township in Passaic County but extends to the northwest into Vernon Township in Sussex County. It is bordered to the west by Wawayanda State Park, to the southeast by Abram S. Hewitt State Forest, and to the northeast by the town of Warwick in Orange County, New York.

The lake drains to the northeast into Long House Creek, which descends into New York and joins Wawayanda Creek, a west-flowing tributary of Pochuck Creek, which in turn runs north to the Wallkill River, a northeast-flowing tributary of the Hudson.