what county is spring lake, nj
Spring Lake, New Jersey. Spring Lake is a borough in Monmouth County, New Jersey, United States. As of the 2010 United States Census, the borough's population was 2,993, reflecting a decline of 574 (-16.1%) from the 3,567 counted in the 2000 Census, which had in turn increased by 68 (+1.9%) from the 3,499 counted in the 1990 Census.