Mountain Lakes is an upscale borough in Morris County, New Jersey, United States, and a suburb of New York City. As of the 2010 United States Census, the borough’s population was 4,160, reflecting a decline of 96 (-2.3%) from the 4,256 counted in the 2000 Census, which had in turn increased by 409 (+10.6%) from the 3,847 counted in the 1990 Census.Originally a planned community, the borough was named for a pair of lakes which served to distinguish Mountain Lakes as “the first year-round residential lake community in northwestern New Jersey.” Mountain Lakes was incorporated as a borough by an act of the New Jersey Legislature on March 3, 1924, from portions of Boonton Township and Hanover Township, subject to the results of a referendum passed on April 29, 1924.
The borough is one of the state’s highest-income communities. In the 2014-2018 ACS, Mountain Lakes had a median household income of $216,250, ranked highest in the state, more than double the statewide median of $79,363.In 2010, Forbes.com listed Mountain Lakes as 210th in its listing of “America’s Most Expensive ZIP Codes”, with a median home price of $1,045,401.Mountain Lakes ranked among the highest annual property tax bills in New Jersey, and highest in Morris County, in 2018 of $20,471, compared to a statewide average of $8,767.
information provided by wikipedia.org