| Name | Sullivan County |
| State | Tennessee |
| FIPS Code | 47163 |
| County Seat | Blountville |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2024) | 162,054 |
| Population Growth Rate(2020-2024) | 2.4% |
| Majority Ethnicity | White 94.49% |
| Public School Majority Ethnicity | White 86% |
| Partisan Voting Index | Strongly Republican:+28 |
| Unemployment Rate (May 2026) | 3.7% |
| Sales Tax Rate (2025) | 9.25% |
| Area Code(s) | 423 / 276 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 94.49% |
| African American | 2.04% |
| Hispanic | 2.48% |
| Asian | 0.84% |
| Native American | 0.14% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 86.09% |
| African American | 2.67% |
| Hispanic | 4.81% |
| Asian | 0.93% |
| Native American | 0.27% |
| Hawaiin/Pacific Islander | 0.04% |