Lake Kerr is an unincorporated community and census-designated place in northeastern Marion County, Florida, United States, surrounding the lake of the same name. It is 30 miles northeast of Ocala, the Marion county seat, and 25 miles southwest of Palatka. Lake Kerr was first listed as a CDP for the 2020 census, at which time the population was 1,843. It is part of the Ocala, Florida Metropolitan Statistical Area.