North Laurel is a census-designated place in Howard County, Maryland, United States. The published population was 4,474 at the 2010 census. This population was substantially less than the CDP's population in 2000, and was the result of an error in defining the boundary prior to tabulation and publication of 2010 Census results. The corrected 2010 Census population is 20,259. North Laurel is adjacent to the City of Laurel, which is located across the Patuxent River in Prince George's County.