Oakland is a borough in Bergen County, New Jersey, United States. As of the 2010 United States Census, the borough's population was 12,754, reflecting an increase of 288 from the 12,466 counted in the 2000 Census, which had in turn increased by 469 from the 11,997 counted in the 1990 Census.Oakland was incorporated as a borough by an act of the New Jersey Legislature on April 8, 1902, from portions of Franklin Township. The name comes from the white oak trees in the area.