Decatur County's estimated 2026 population is 11,902 with a growth rate of 0.69% in the past year according to the most recent United States census data. Decatur County is the 87th largest county in Tennessee. The 2010 population was 11,713 and has seen a growth of 1.61% since that time.
Data after 2023 is projected based on recent change
Overall: 45.8 years
Female: 48.6 years
Male: 44.2 years
There are 9,244 adults, (2,756 of whom are seniors) in Decatur County.
Female: 5,730 (49.5%)
Male: 5,849 (50.5%)
The racial composition of Decatur County includes 91.48% White, and smaller percentages for Black or African American, Asian, other race, Native American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 10,592 | 91.48% |
| Two or more races | 386 | 3.33% |
| Black or African American | 315 | 2.72% |
| Asian | 161 | 1.39% |
| Other race | 117 | 1.01% |
| Native American | 8 | 0.07% |
Decatur County's average per capita income is $41,758. Household income levels show a median of $45,375. The poverty rate stands at 22.15%.
Name | Median | Mean |
|---|---|---|
| Married Families | $75,481 | - |
| Families | $61,360 | $76,315 |
| Households | $45,375 | $63,847 |
| Non Families | $26,078 | $36,712 |
Average Income
Median Household Income
Poverty Rate