| Place Name | St. Marys Township |
| Place Type | Township |
| ZIP Code(s) | 45822 45869 45871 45885 |
| County | Auglaize County |
| Area Code(s) | 419,567 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 11,065 |
| Majority Ethnicity | White 97.6% |
| Metro/Micro Stats Area | Wapakoneta, OH |
| US Congressional District(s) | Ohio 4th |
| State House Districts | 82,84 |
| State Senate Districts | 1,12 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 97.6% |
| African American | 0.36% |
| Hispanic | 0.06% |
| Asian | 0.52% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.45% |