South Orange, known as the Township of South Orange Village from October 1978 until April 25, 2024, is a suburban village in Essex County, in the U.S. state of New Jersey. As of the 2020 United States census, the village population was 18,484, an increase of 2,286 (+14.1%) from the 2010 census count of 16,198, which in turn reflected a decline of 766 (−4.5%) from the 16,964 counted in the 2000 census. Seton Hall University is located in the township.

Essex County is located in the northeastern part of the U.S. state of New Jersey, and is one of the centrally located counties in the New York metropolitan area. As of the 2020 census, the county was the state's second-most populous county, with a population of 863,728, its highest decennial count since the 1970 census and an increase of 79,759 (+10.2%) from the 2010 census count of 783,969. The county is part of the North Jersey region of the state.