| Place Name | Old Washington |
| Place Type | Village |
| ZIP Code(s) | 43768 |
| County | Guernsey County |
| Area Code(s) | 220,740 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 283 |
| Population Growth Rate (2010-19) | -20.07% |
| Majority Ethnicity | White 90.5% |
| Metro/Micro Stats Area | Cambridge, OH |
| US Congressional District(s) | Ohio 6th |
| State House Districts | 97 |
| State Senate Districts | 20 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 90.5% |
| African American | 4.75% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.75% |