| Place Name | Marion Township (Decatur County) |
| Place Type | Township |
| ZIP Code(s) | 47240 47283 |
| County | Decatur County |
| Area Code(s) | 812,930 |
| Timezone | Eastern Standard Time (EST) |
| Population (2021) | 2,627 |
| Majority Ethnicity | White 97.77% |
| Metro/Micro Stats Area | Greensburg, IN |
| US Congressional District(s) | Indiana 6th |
| State House Districts | 67 |
| State Senate Districts | 43 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 97.77% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 1.54% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.69% |