Sussex County Census - 2010
According to 2010 Census data, the population of Sussex County is 149,265, an increase of +5,099 or +3.5% since 2000. The County growth rate has slowed compared to +10% increase from 1990 to 2000. Municipalities with the largest increases since 2000 are Hardyston (2,042), Sparta (1,642), and Wantage (971), while Vernon and Hopatcong both decreased by about 741. Population density for Sussex County is 288 persons per square mile, and approximately 6% of the population are Hispanic or minorities. Census population data includes only year-round residents, and does not include seasonal residents. Additional Census tables are posted on the County Planning webpage, including population by race, and housing unit data.