| Official Name: | Marion Township Pike County |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Pike |
| Government Type: | Indiana township |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 36.11 |
| Area Land Sq Mi: | 35.41 |
| Area Water Sq Mi: | 0.7 |
| Area Water Percent: | 1.94 |
| Population As Of: | 2020 |
| Population Total: | 683 |
| Population Density Sq Mi: | auto |
| Elevation M: | 158 |
| Elevation Ft: | 518 |
| Coordinates: | 38.3817°N -87.13°W |
| Postal Code Type: | ZIP codes |
| Postal Code: | 47564, 47590, 47598 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 453611 |
Marion Township is one of nine townships in Pike County, Indiana, United States. As of the 2020 census, its population was 683 and it contained 297 housing units.[1]
Marion Township was organized in 1857.[2]
According to the 2010 census, the township has a total area of, of which (or 98.06%) is land and (or 1.94%) is water.[3]
(This list is based on USGS data and may include former settlements.)
The township contains these six cemeteries: Beadles, Bruster Branch, Corn, Flat Creek, Hayes and Walnut Grove.