Clairsville is a city located in Belmont 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 2.2 square miles (6.0 km²) and sits at an elevation of 1284 ft. With a population of approximately 5,057 residents, Clairsville offers a peaceful, rural atmosphere.
The town's population is composed of about 45.32% males and 54.68% females, and it has a population density of 352.09 people per square mile (908.15/km²). Clairsville lies at a latitude of 40.08 and a longitude of -80.9, operating in the UTC-5.
Locals reflect a blend of American ancestry, with roots primarily in United States (4.8%), followed by English (13.8%), German (28.1%), and Scotch-Irish (0%) heritage. The town is identified by the ZIP code 43950.