Newtonville is an unincorporated community and census-designated place (CDP)[5] in Buena Vista Township in Atlantic County, in the U.S. state of New Jersey.

[8][9] Newtonville, NJ, is a historically African American town that developed as a significant settlement for Black families migrating from urban areas such as Philadelphia.

These migrations were often motivated by the search for better living conditions, opportunities for self-sufficiency, and a chance to escape the restrictive racial environments of larger cities during the early to mid-20th century.

Newtonville, NJ, is located within Buena Vista Township, and holds historical significance for its contributions to the community's cultural, social, and economic development.

In 1998, the Dr. Martin Luther King Community Center was opened in Newtonville, followed in 2003 by the African American Heritage Museum of Southern New Jersey at the same site.