| Place Name | Union Township (Adams County) |
| Place Type | Township |
| ZIP Code(s) | 17331 17340 |
| County | Adams County |
| Area Code(s) | 717 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 3,081 |
| Majority Ethnicity | White 96.68% |
| Metro/Micro Stats Area | Gettysburg, PA |
| US Congressional District(s) | Pennsylvania 4th |
| State House Districts | 91 |
| State Senate Districts | 33 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 96.68% |
| African American | 1.53% |
| Hispanic | 0.52% |
| Asian | 0.2% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.08% |