| Name | Marshall County |
| State | Indiana |
| FIPS Code | 18099 |
| County Seat | Plymouth |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 47,045 |
| Population Growth Rate(2000-2022) | -2.03% |
| Majority Ethnicity | White 98.04% |
| Public School Majority Ethnicity | White 74% |
| Partisan Voting Index | Republican:+19 |
| Unemployment Rate (January 2025) | 4.0% |
| Area Code(s) | 574 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 98.04% |
| African American | 0.81% |
| Hispanic | 0.32% |
| Asian | 0.73% |
| Native American | 0.05% |
| Hawaiin/Pacific Islander | 0.05% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 73.68% |
| African American | 0.98% |
| Hispanic | 22.06% |
| Asian | 0.57% |
| Native American | 0.06% |
| Hawaiin/Pacific Islander | 0.04% |