| Name | DeKalb County |
| State | Tennessee |
| FIPS Code | 47041 |
| County Seat | Smithville |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 18,770 |
| Population Growth Rate(2000-2022) | 7.25% |
| Majority Ethnicity | White 97.18% |
| Public School Majority Ethnicity | White 79% |
| Partisan Voting Index | Strongly Republican:+31 |
| Unemployment Rate (May 2025) | 3.8% |
| Area Code(s) | 615 / 629 / 931 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 97.18% |
| African American | 1.85% |
| Hispanic | 0.32% |
| Asian | 0.65% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 79.34% |
| African American | 1.46% |
| Hispanic | 15.72% |
| Asian | 0.31% |
| Native American | 0.07% |
| Hawaiin/Pacific Islander | 0% |