Miami County, Ohio
Miami County | |
|---|---|
County courthouse in Troy | |
Location within the U.S. state of Ohio | |
Ohio's location within the U.S. | |
| Coordinates: 40°03′N 84°14′W / 40.05°N 84.23°W | |
| Country | United States |
| State | Ohio |
| Founded | March 1, 1807 |
| Named after | Miami people |
| Seat | Troy |
| Largest city | Troy* |
| Area | |
• Total | 410 sq mi (1,100 km2) |
| • Land | 407 sq mi (1,050 km2) |
| • Water | 3.1 sq mi (8 km2) 0.8% |
| Population (2020) | |
• Total | 108,774 |
| Time zone | UTC−5 (Eastern) |
| • Summer (DST) | UTC−4 (EDT) |
| Congressional districts | 8th, 15th |
| Website | www |
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, OH Metropolitan Statistical Area.