| City Name | Casstown (Village) |
| State | Ohio |
| County | Miami County |
| Population (2000) | 322 |
| Housing Units | 132 |
| Total Area | 0.11 square miles |
| Water Area | 0.00 square miles |
| Land Area | 0.11 square miles |
| Population Density | 3,017.0 people/square mile |
| Housing Density | 1,236.8 houses/square mile |