| Place Name | Washington Township (Osage County) |
| Place Type | Township |
| County | Osage County |
| Area Code(s) | 573 |
| Timezone | Central Standard Time (CST) |
| Population (2021) | 3,551 |
| Majority Ethnicity | White 99.07% |
| Metro/Micro Stats Area | Jefferson City, MO |
| US Congressional District(s) | Missouri 3rd |
| State House Districts | 61,62 |
| State Senate Districts | 6 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 99.07% |
| African American | 0.11% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.82% |