Heimatgeschichte · Miami · 24.09.2026 Miami County, Ohio Miami County is a county located in the U.S. state of Ohio. As of the 2020 census, the population was 108,774. Its county seat is Troy. The county is named in honor of the Miami people. Miami County is part of the Dayton metropolitan area. von Fremdinhalte · Regionauts Quelle: Text: Wikipedia – „Miami County, Ohio“, Autorinnen und Autoren (Versionsgeschichte), CC BY-SA 4.0 · Foto: Earth Science and Remote Sensing Unit, Lyndon B. Johnson Space Center, Public domain – Wikimedia Commons