Addison Township, Ohio
| Addison Township, Gallia County, Ohio | |
|---|---|
| The Point Pleasant Rail Bridge crossing the Ohio River in the township's southeastern corner | |
| Location of Addison Township in Gallia County | |
| Coordinates: 38°53′37″N 82°10′14″W / 38.89361°N 82.17056°W | |
| Country | United States | 
| State | Ohio | 
| County | Gallia | 
| Area | |
|  • Total | 27.6 sq mi (71.4 km2) | 
| • Land | 26.8 sq mi (69.5 km2) | 
| • Water | 0.7 sq mi (1.9 km2) | 
| Elevation | 728 ft (222 m) | 
| Population  (2020) | |
|  • Total | 2,160 | 
| • Density | 78/sq mi (30/km2) | 
| Time zone | UTC-5 (Eastern (EST)) | 
| • Summer (DST) | UTC-4 (EDT) | 
| ZIP code | 45631 | 
| Area code | 740 | 
| FIPS code | 39-00422 | 
| GNIS feature ID | 1086132 | 
Addison Township is one of the fifteen townships of Gallia County, Ohio, United States. As of the 2020 census, the population was 2,160.