| Place Name | Gratis Township |
| Place Type | Township |
| ZIP Code(s) | 45042 45064 45311 45320 45381 |
| County | Preble County |
| Area Code(s) | 326,937 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 4,231 |
| Majority Ethnicity | White 99.81% |
| US Congressional District(s) | Ohio 8th |
| State House Districts | 43 |
| State Senate Districts | 5 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 99.81% |
| African American | 0% |
| Hispanic | 0.19% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |