| Name | Marshall County |
| State | Kansas |
| FIPS Code | 20117 |
| County Seat | Marysville |
| Timezone | Central Daylight Time (CDT) |
| Population (2024) | 9,963 |
| Population Growth Rate(2020-2024) | -0.69% |
| Majority Ethnicity | White 96.07% |
| Public School Majority Ethnicity | White 89% |
| Partisan Voting Index | Strongly Republican:+25 |
| Unemployment Rate (May 2026) | 4.1% |
| Sales Tax Rate (2025) | 7% |
| Area Code(s) | 785 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 96.07% |
| African American | 0.67% |
| Hispanic | 2.65% |
| Asian | 0.31% |
| Native American | 0.29% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 89.3% |
| African American | 0.88% |
| Hispanic | 4.39% |
| Asian | 0.23% |
| Native American | 1.4% |
| Hawaiin/Pacific Islander | 0% |