| 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: | Clay |
| Government Type: | Indiana township |
| Area Total Sq Mi: | 35.75 |
| Area Land Sq Mi: | 35.04 |
| Area Water Sq Mi: | 0.71 |
| Population As Of: | 2020 |
| Population Total: | 4016 |
| Population Density Sq Mi: | auto |
| Elevation Footnotes: | [1] |
| Elevation M: | 207 |
| Elevation Ft: | 679 |
| Coordinates: | 39.4742°N -87.1839°W |
| Blank Name: | FIPS code |
| Blank Info: | 18-61290[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 453761 |
Posey Township is one of eleven townships in Clay County, Indiana. As of the 2020 census, its population was 4,016 (down from 4,063 at 2010[3]) and it contained 1,682 housing units.[4]
Posey Township was organized in 1828. It was named for Territorial Governor Thomas Posey.[5]
According to the 2010 census, the township has a total area of, of which (or 98.01%) is land and (or 1.99%) is water.[3]
(This list is based on USGS data and may include former settlements.)
The township contains seven cemeteries: Billtown, Clearview, Cottage Hill, German, Rhule, Summit Lawn and Summit Lawn.