Other New Jersey counties with greater than the state average Asian. share of population (5.9%) were: Hudson (9.9%), Somerset (8.5%) and Morris (6.4%). The number of African Americans grew faster than total population. Based on those individuals who identified only one race in the 2000 Census. (97.5% of total), the number of blacks or African-Americans in New Jersey increased. from 1,036,825 in 1990 to 1,141,821 in 2000 for a gain of 104,996 (or 10.1%).