| Place Name | Knoxville |
| Place Type | Town |
| ZIP Code(s) | 72845 |
| County | Johnson County |
| Area Code(s) | 479 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 798 |
| Population Growth Rate (2010-19) | -9.71% |
| Majority Ethnicity | White 91.49% |
| US Congressional District(s) | Arkansas 4th |
| State House Districts | 69 |
| State Senate Districts | 6 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 91.49% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0.16% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 8.35% |