Hunterdon Developmental Center (HDC) is a developmental center located on 102 acres in Union Township, Hunterdon County, New Jersey, near Clinton. It opened in 1969 and provides a broad spectrum of behavioral, medical and habilitation services to women and men with intellectual and developmental disabilities. HDC also operates a Work Activity Center (WAC). As of March 2017, HDC had a census of 480 residents. It was originally the Hunterdon State School and started in 1966.