| Name | Sullivan County |
| State | Missouri |
| FIPS Code | 29211 |
| County Seat | Milan |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 6,667 |
| Population Growth Rate(2000-2022) | -10.65% |
| Majority Ethnicity | White 95.26% |
| Public School Majority Ethnicity | White 66% |
| Partisan Voting Index | Strongly Republican:+28 |
| Unemployment Rate (December 2024) | 3.9% |
| Area Code(s) | 660 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 95.26% |
| African American | 3.59% |
| Hispanic | 0.25% |
| Asian | 0.89% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 65.91% |
| African American | 3.58% |
| Hispanic | 28.53% |
| Asian | 0.56% |
| Native American | 0.28% |
| Hawaiin/Pacific Islander | 0.28% |