Newtonville is an unincorporated community and census-designated place (CDP) in Buena Vista Township in Atlantic County, in the U.S. state of New Jersey. As of the 2020 census, Newtonville had a population of 742. Newtonville is located on a Conrail line east-northeast of Buena. Newtonville has a post office with ZIP Code 08346.
Newtonville was first listed as a census designated place in the 2020 U.S. census.
As of the 2020 United States census, the population was 742.
The CDP is in the Buena Regional School District.