Sullivan County's estimated 2026 population is 164,809 with a growth rate of 0.64% 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 5.14% since that time.
Data after 2023 is projected based on recent change
Overall: 45 years
Female: 46.3 years
Male: 43.6 years
There are 130,014 adults, (35,721 of whom are seniors) in Sullivan County.
Female: 81,978 (51%)
Male: 78,646 (49%)
The racial composition of Sullivan County includes 92.43% White, and smaller percentages for Black or African American, Asian, other race, Native American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 148,461 | 92.43% |
| Two or more races | 6,331 | 3.94% |
| Black or African American | 3,307 | 2.06% |
| Asian | 1,204 | 0.75% |
| Other race | 1,143 | 0.71% |
| Native American | 178 | 0.11% |
Sullivan County's average per capita income is $43,361. Household income levels show a median of $58,807. The poverty rate stands at 15.43%.
Name | Median | Mean |
|---|---|---|
| Married Families | $92,512 | $116,380 |
| Families | $78,264 | $100,152 |
| Households | $58,807 | $82,467 |
| Non Families | $35,250 | $48,904 |
Average Income
Median Household Income
Poverty Rate