| Name | Union County |
| State | Tennessee |
| FIPS Code | 47173 |
| County Seat | Maynardville |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2024) | 20,747 |
| Population Growth Rate(2020-2024) | 4.55% |
| Majority Ethnicity | White 97.15% |
| Public School Majority Ethnicity | White 95% |
| Partisan Voting Index | Strongly Republican:+36 |
| Unemployment Rate (May 2026) | 3.9% |
| Sales Tax Rate (2025) | 9.25% |
| Area Code(s) | 865 / 423 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 97.15% |
| African American | 0.56% |
| Hispanic | 2.26% |
| Asian | 0.02% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 95.1% |
| African American | 0.53% |
| Hispanic | 2.71% |
| Asian | 0.25% |
| Native American | 0.11% |
| Hawaiin/Pacific Islander | 0% |