Kearny ( ) is a town in Hudson County, New Jersey, United States and a suburb of Newark. As of the 2010 United States Census, the town's population was 40,684, reflecting an increase of 171 (+0.4%) from the 40,513 counted in the 2000 Census, which had in turn increased by 5,639 (+16.2%) from the 34,874 counted in the 1990 Census.