| Place Name | Washington Township (Clinton County) |
| Place Type | Township |
| ZIP Code(s) | 45107 45146 45148 45177 |
| County | Clinton County |
| Area Code(s) | 326,937 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 1,866 |
| Majority Ethnicity | White 92.98% |
| Metro/Micro Stats Area | Wilmington, OH |
| US Congressional District(s) | Ohio 15th |
| State House Districts | 91 |
| State Senate Districts | 17 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 92.98% |
| African American | 4.87% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 2.15% |