Spring Lake is a borough situated on the Jersey Shore in Monmouth County, in the U.S. state of New Jersey. As of the 2020 United States census, the borough's population was 2,789, a decrease of 204 from the 2010 census count of 2,993, which in turn reflected a decline of 574 from the 3,567 counted in the 2000 census. New Jersey Monthly magazine ranked Spring Lake as the 240th best place to live in New Jersey in its 2010 rankings of the "Best Places To Live" in New Jersey.