| Place Name | Union City |
| Place Type | City |
| ZIP Code(s) | 30291 |
| County | Fulton County |
| Area Code(s) | 470,678,770,404,470,678 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 19,356 |
| Population Growth Rate (2010-19) | 37.90% |
| Majority Ethnicity | African American 91.9% |
| Metro/Micro Stats Area | Atlanta-Sandy Springs-Alpharetta, GA |
| US Congressional District(s) | Georgia 13th |
| State House Districts | 62,63,64,65 |
| State Senate Districts | 035,039 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 4.25% |
| African American | 91.9% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 3.85% |