| Place Name | Union Township (Mifflin County) |
| Place Type | Township |
| ZIP Code(s) | 17004 17084 |
| County | Mifflin County |
| Area Code(s) | 717 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 3,620 |
| Majority Ethnicity | White 99.41% |
| Metro/Micro Stats Area | Lewistown, PA |
| US Congressional District(s) | Pennsylvania 10th |
| State House Districts | 171 |
| State Senate Districts | 34 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 99.41% |
| African American | 0.53% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.06% |