Johnson County's estimated 2026 population is 18,766 with a growth rate of 0.7% in the past year according to the most recent United States census data. Johnson County is the 71st largest county in Tennessee. The 2010 population was 18,287 and has seen a growth of 2.62% since that time.
Data after 2023 is projected based on recent change
The racial composition of Johnson County includes 89.07% White, 3.75% Black or African American, and smaller percentages for other race, Native American, Asian and multiracial populations.
White (89.07%)
Two or more races (5.53%)
Black or African American (3.75%)
Other race (0.88%)
Native American (0.59%)
Asian (0.19%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 16,097 | 89.07% |
| Two or more races | 999 | 5.53% |
| Black or African American | 677 | 3.75% |
| Other race | 159 | 0.88% |
| Native American | 107 | 0.59% |
| Asian | 34 | 0.19% |
Married
Widowed
Divorced
Separated
Never Married
Johnson County's average per capita income is $36,014. Household income levels show a median of $52,152. The poverty rate stands at 22.09%.
Name | Median | Mean |
|---|---|---|
| Married Families | $82,436 | - |
| Families | $66,747 | $80,629 |
| Households | $52,152 | $69,081 |
| Non Families | $27,839 | $39,401 |
Average Income
Median Household Income
Poverty Rate