| Name | Doniphan County |
| State | Kansas |
| FIPS Code | 20043 |
| County Seat | Troy |
| Timezone | Central Daylight Time (CDT) |
| Population (2024) | 7,530 |
| Population Growth Rate(2020-2024) | 0.36% |
| Majority Ethnicity | White 93% |
| Public School Majority Ethnicity | White 85% |
| Partisan Voting Index | Strongly Republican:+32 |
| Unemployment Rate (May 2026) | 4.3% |
| Area Code(s) | 785 / 913 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 93% |
| African American | 3.13% |
| Hispanic | 3.24% |
| Asian | 0.1% |
| Native American | 0.42% |
| Hawaiin/Pacific Islander | 0.11% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 85.47% |
| African American | 1.53% |
| Hispanic | 5.55% |
| Asian | 0.07% |
| Native American | 1.09% |
| Hawaiin/Pacific Islander | 0% |