| Name | Dyer County |
| State | Tennessee |
| FIPS Code | 47045 |
| County Seat | Dyersburg |
| Timezone | Central Daylight Time (CDT) |
| Population (2024) | 36,432 |
| Population Growth Rate(2020-2024) | -1.01% |
| Majority Ethnicity | White 80.21% |
| Public School Majority Ethnicity | White 69% |
| Partisan Voting Index | Strongly Republican:+31 |
| Unemployment Rate (May 2026) | 3.7% |
| Area Code(s) | 731 / 327 / 870 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 80.21% |
| African American | 15.35% |
| Hispanic | 3.95% |
| Asian | 0.39% |
| Native American | 0.07% |
| Hawaiin/Pacific Islander | 0.03% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 68.73% |
| African American | 19.03% |
| Hispanic | 5.77% |
| Asian | 0.61% |
| Native American | 0.13% |
| Hawaiin/Pacific Islander | 0.02% |