Lake Hopatcong is a census-designated place in Jefferson Township, Morris County, New Jersey, United States. It includes communities on the northeast side of Lake Hopatcong, the largest freshwater body in the state. As of the 2020 United States census, the population was 10,232.
Elevation: 930 ft (280 m)
Country: United States
State: New Jersey
County: Morris
Township: Jefferson
ZIP Codes: 07849 (Lake Hopatcong) · 07885 (Wharton)
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