| Name | Marshall County |
| State | Iowa |
| FIPS Code | 19127 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 40,568 |
| Population Growth Rate(2000-2022) | -1.34% |
| Majority Ethnicity | White 71.47% |
| Public School Majority Ethnicity | White 51% |
| Partisan Voting Index | Republican:+2 |
| Unemployment Rate | 9.8% |
| Race/Ethnicy | Percentage of Population (2018) |
|---|---|
| White | 71.47% |
| African American | 1.92% |
| Hispanic | 22.1% |
| Asian | 3.85% |
| Native American | 0.66% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicy | Percentage of Public School Students (2018) |
|---|---|
| White | 50.92% |
| African American | 2.71% |
| Hispanic | 38.58% |
| Asian | 4.88% |
| Native American | 0.46% |
| Hawaiin/Pacific Islander | 0.08% |