Lincoln Park is a borough in Morris County, New Jersey, United States. As of the 2010 United States Census, the borough's population was 10,521, reflecting a decline of 409 from the 10,930 counted in the 2000 Census, which had in turn declined by 48 from the 10,978 counted in the 1990 Census.Lincoln Park was incorporated as a borough by an act of the New Jersey Legislature on March 11, 1922, from portions of Pequannock Township. The borough was reincorporated on February 26, 1925. The borough was named for President Abraham Lincoln.New Jersey Monthly magazine ranked Lincoln Park as its 5th best place to live in its 2008 rankings of the "Best Places To Live" in the state.