South Orange, officially the Township of South Orange Village, is a suburban township in Essex County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 18,484, an increase of 2,286 from the 2010 census count of 16,198, which in turn reflected a decline of 766 from the 16,964 counted in the 2000 censu…South Orange, officially the Township of South Orange Village, is a suburban township in Essex County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 18,484, an increase of 2,286 from the 2010 census count of 16,198, which in turn reflected a decline of 766 from the 16,964 counted in the 2000 census. Seton Hall University is located in the township.