| Official Name: | Polk Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Monroe |
| Government Type: | Indiana township |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 38.79 |
| Area Land Sq Mi: | 34.16 |
| Area Water Sq Mi: | 4.63 |
| Area Water Percent: | 11.94 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 304 |
| Population Density Sq Mi: | 10.5 |
| Elevation Footnotes: | [2] |
| Elevation M: | 200 |
| Elevation Ft: | 656 |
| Coordinates: | 39.0236°N -86.4047°W |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 47264, 47401, 47436 |
| Area Code: | 812, 930 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 453756 |
Polk Township is one of eleven townships in Monroe County, Indiana. As of the 2010 census, its population was 360 and it contained 195 housing units.[3] It is one of the least densely-populated townships in the state; this is largely because most of the land is occupied by Lake Monroe, the Hoosier National Forest, and seasonal homes and attractions.
Polk Township was established in 1849.[4] It was established soon after the term of its namesake, James K. Polk, had ended.[5]
Epsilon II Archaeological Site and Kappa V Archaeological Site are listed on the National Register of Historic Places.
According to the 2010 census, the township has a total area of, of which (or 88.06%) is land and (or 11.94%) is water.[3]
(This list is based on USGS data and may include former settlements.)
The township contains these four cemeteries: Burgoon Church, Hillenburg, Mitchell and Todd.