Sullivan County's estimated 2026 population is 164,001 with a growth rate of 0.4% in the past year according to the most recent United States census data. Sullivan County is the 10th largest county in Tennessee. The 2010 population was 156,756 and has seen a growth of 4.62% since that time.
Data after 2023 is projected based on recent change
The racial composition of Sullivan County includes 93.09% White, and smaller percentages for Black or African American, Asian, other race, Native American and multiracial populations.
White (93.09%)
Two or more races (3.27%)
Black or African American (2.01%)
Asian (0.83%)
Other race (0.66%)
Native American (0.14%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 148,653 | 93.09% |
| Two or more races | 5,228 | 3.27% |
| Black or African American | 3,212 | 2.01% |
| Asian | 1,328 | 0.83% |
| Other race | 1,049 | 0.66% |
| Native American | 223 | 0.14% |
Married
Widowed
Divorced
Separated
Never Married
Sullivan County's average per capita income is $41,572. Household income levels show a median of $56,802. The poverty rate stands at 14.91%.
Name | Median | Mean |
|---|---|---|
| Married Families | $87,998 | $112,801 |
| Families | $74,563 | $96,802 |
| Households | $56,802 | $80,669 |
| Non Families | $34,811 | $49,176 |
Average Income
Median Household Income
Poverty Rate