Newtonsville is a village located in Clermont County, in the state of Ohio (OH), United States. Nestled in the East North Central division of the Midwest region, it covers an area of 0.2 square miles (1.0 km²) and sits at an elevation of 905 ft. With a population of approximately 492 residents, Newtonsville offers a peaceful, rural atmosphere.
The town's population is composed of about 50% males and 50% females, and it has a population density of 50.00 people per square mile (791.51/km²). Newtonsville lies at a latitude of 39.18 and a longitude of -84.08, operating in the UTC-5.
Locals reflect a blend of American ancestry, with roots primarily in United States (27%), followed by English (3.7%), German (14.6%), and Scotch-Irish (0%) heritage. The town is identified by the ZIP code N/A.