| Name | Atchison County |
| State | Missouri |
| FIPS Code | 29005 |
| County Seat | Rock Port |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 5,664 |
| Population Growth Rate(2000-2022) | -6.68% |
| Majority Ethnicity | White 98.91% |
| Public School Majority Ethnicity | White 96% |
| Partisan Voting Index | Strongly Republican:+27 |
| Unemployment Rate (November 2024) | 2.6% |
| Area Code(s) | 660 / 402 / 531 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 98.91% |
| African American | 0.32% |
| Hispanic | 0.32% |
| Asian | 0.22% |
| Native American | 0.12% |
| Hawaiin/Pacific Islander | 0.12% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 95.56% |
| African American | 1.8% |
| Hispanic | 2.16% |
| Asian | 0.12% |
| Native American | 0.24% |
| Hawaiin/Pacific Islander | 0% |