| Name | Atchison County |
| State | Kansas |
| FIPS Code | 20005 |
| County Seat | Atchison |
| Timezone | Central Daylight Time (CDT) |
| Population (2024) | 16,142 |
| Population Growth Rate(2020-2024) | -1.25% |
| Majority Ethnicity | White 90.91% |
| Public School Majority Ethnicity | White 78% |
| Partisan Voting Index | Republican:+19 |
| Unemployment Rate (May 2026) | 4.4% |
| Sales Tax Rate (2025) | 7.5% |
| Area Code(s) | 913 / 785 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 90.91% |
| African American | 4.48% |
| Hispanic | 3.73% |
| Asian | 0.71% |
| Native American | 0.17% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 78.04% |
| African American | 6.62% |
| Hispanic | 4.68% |
| Asian | 0.2% |
| Native American | 0.55% |
| Hawaiin/Pacific Islander | 0% |