| Place Name | Union Hall |
| Place Type | Census Designated Place |
| ZIP Code(s) | 24176 |
| County | Franklin County |
| Area Code(s) | 540 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 1,730 |
| Population Growth Rate (2010-19) | 16.70% |
| Majority Ethnicity | White 94.93% |
| Metro/Micro Stats Area | Roanoke, VA |
| US Congressional District(s) | Virginia 5th |
| House of Delegates Districts | 9 |
| State Senate Districts | 19 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 94.93% |
| African American | 4.21% |
| Hispanic | 0% |
| Asian | 0.86% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |