| Place Name | Smithville |
| Place Type | City |
| ZIP Code(s) | 37166 |
| County | DeKalb County |
| Area Code(s) | 615,629 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 4,541 |
| Population Growth Rate (2010-19) | 10.46% |
| Majority Ethnicity | White 76.88% |
| US Congressional District(s) | Tennessee 6th |
| State House Districts | 40,46 |
| State Senate Districts | 17 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 76.88% |
| African American | 2.64% |
| Hispanic | 1.69% |
| Asian | 0.58% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 18.2% |