| Official Name: | Posey Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Washington |
| Government Type: | Indiana township |
| Area Total Sq Mi: | 33.82 |
| Area Land Sq Mi: | 33.55 |
| Area Water Sq Mi: | 0.27 |
| Area Water Percent: | 0.80 |
| Population As Of: | 2020 |
| Population Total: | 1791 |
| Population Density Sq Mi: | auto |
| Elevation M: | 201 |
| Elevation Ft: | 659 |
| Coordinates: | 38.4461°N -86.2144°W |
| Postal Code Type: | ZIP codes |
| Postal Code: | 47120, 47125, 47145, 47164, 47165, 47167 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0453767 |
Posey Township is one of thirteen townships in Washington County, Indiana, United States. As of the 2020 census, its population was 1,791 and it contained 804 housing units.[1]
According to the 2010 census, the township has a total area of, of which (or 99.20%) is land and (or 0.80%) is water.[2]
(This list is based on USGS data and may include former settlements.)
The township contains these two cemeteries: Old Unity and Walton.