Blanchester is a village located in Clinton 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 3.0 square miles (8.0 km²) and sits at an elevation of 971 ft. With a population of approximately 4,220 residents, Blanchester offers a peaceful, rural atmosphere.
The town's population is composed of about 46.11% males and 53.89% females, and it has a population density of 425.68 people per square mile (550.46/km²). Blanchester lies at a latitude of 39.29 and a longitude of -83.99, operating in the UTC-5.
Locals reflect a blend of American ancestry, with roots primarily in United States (21.2%), followed by English (11.1%), German (17.8%), and Scotch-Irish (0%) heritage. The town is identified by the ZIP code 45107.