Harrison is a town in Hudson County, New Jersey, United States. It is a suburb of the nearby city of Newark, New Jersey.As of the 2010 United States Census, Harrison's population was 13,620, reflecting a decline of 804 from the 14,424 counted in the 2000 Census, which had in turn increased by 999 from the 13,425 counted in the 1990 Census. Once considered "the beehive of industry", the town is undergoing a residential renewal, particularly along the Passaic River.