| Place Name | Washington Township (Hardin County) |
| Place Type | Township |
| ZIP Code(s) | 43326 45810 45835 45836 |
| County | Hardin County |
| Area Code(s) | 419,567 |
| Timezone | Eastern Standard Time (EST) |
| Population (2021) | 686 |
| Majority Ethnicity | White 97.69% |
| US Congressional District(s) | Ohio 5th |
| State House Districts | 83 |
| State Senate Districts | 1 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 97.69% |
| African American | 0.58% |
| Hispanic | 0% |
| Asian | 0.72% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.01% |