| Place Name | Plymouth |
| Place Type | City |
| ZIP Code(s) | 46563 |
| County | Marshall County |
| Area Code(s) | 574 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 10,045 |
| Population Growth Rate (2010-19) | 1.80% |
| Majority Ethnicity | White 73.48% |
| Metro/Micro Stats Area | Plymouth, IN |
| US Congressional District(s) | Indiana 2nd |
| State House Districts | 17 |
| State Senate Districts | 9 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 73.48% |
| African American | 1.48% |
| Hispanic | 0% |
| Asian | 0.08% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 24.96% |