| Name | Mcnairy County |
| State | Tennessee |
| FIPS Code | 47109 |
| County Seat | Selmer |
| Timezone | Central Daylight Time (CDT) |
| Population (2024) | 26,065 |
| Population Growth Rate(2020-2024) | 0.81% |
| Majority Ethnicity | White 91.93% |
| Public School Majority Ethnicity | White 89% |
| Partisan Voting Index | Strongly Republican:+34 |
| Unemployment Rate (May 2026) | 4.2% |
| Area Code(s) | 731 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 91.93% |
| African American | 5.31% |
| Hispanic | 2.03% |
| Asian | 0.47% |
| Native American | 0.26% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 89.26% |
| African American | 5.79% |
| Hispanic | 2.78% |
| Asian | 0.37% |
| Native American | 0.1% |
| Hawaiin/Pacific Islander | 0.02% |