| Place Name | Jefferson Township (Washington County) |
| Place Type | Township |
| ZIP Code(s) | 15021 15312 26035 |
| County | Washington County |
| Area Code(s) | 724,878 |
| Timezone | Eastern Standard Time (EST) |
| Population (2021) | 1,312 |
| Majority Ethnicity | White 95.93% |
| Metro/Micro Stats Area | Pittsburgh, PA |
| US Congressional District(s) | Pennsylvania 18th |
| State House Districts | 15,1 |
| State Senate Districts | 46,1 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 95.93% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0.89% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 3.18% |