In 2023, Ohio saw a small bump in population, but that was after years of decline, and experts predict that the state will continue to lose residents in the future. Immigration from outside the country has been the main reason Ohio's population hasn't fallen more. Like a lot of other Rust Belt states, good jobs are much harder to come by in the state these days, which has driven people away.
Ohio is also known for its bitterly cold winters, so even a lot of people who are around retirement age have decided to move to other states for the weather.