| Name | Decatur County |
| State | Tennessee |
| FIPS Code | 47039 |
| County Seat | Decaturville |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 11,732 |
| Population Growth Rate(2000-2022) | -2.74% |
| Majority Ethnicity | White 97.33% |
| Public School Majority Ethnicity | White 87% |
| Partisan Voting Index | Strongly Republican:+34 |
| Unemployment Rate (January 2025) | 4.5% |
| Area Code(s) | 731 / 931 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 97.33% |
| African American | 2.49% |
| Hispanic | 0.07% |
| Asian | 0.11% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 87.47% |
| African American | 2.3% |
| Hispanic | 5.77% |
| Asian | 1.25% |
| Native American | 0.46% |
| Hawaiin/Pacific Islander | 0.13% |