Celina, Ohio, is a small city located in Mercer County in the western part of the state. It is known for its picturesque lakes, including Grand Lake St. Marys, which is one of the largest inland lakes in Ohio. The city has a rich history and offers various recreational activities, such as fishing, boating, and hiking. The population of Celina is around 10,000 residents, making it a close-knit community. The city hosts several annual events, including the Celina Lake Festival, which celebrates local culture and attracts visitors. Celina also features parks, schools, and local businesses that contribute to its charm.