| Place Name | New Marshfield |
| Place Type | Census Designated Place |
| ZIP Code(s) | 45766 |
| County | Athens County |
| Area Code(s) | 220,740 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 260 |
| Population Growth Rate (2010-19) | -3.07% |
| Majority Ethnicity | White 100% |
| Metro/Micro Stats Area | Athens, OH |
| US Congressional District(s) | Ohio 15th |
| State House Districts | 94 |
| State Senate Districts | 30 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 100% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |