| Place Name | Flat Rock |
| Place Type | Census Designated Place |
| ZIP Code(s) | 44811 |
| County | Seneca County |
| Area Code(s) | 419,567 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 60 |
| Population Growth Rate (2010-19) | -2.58% |
| Majority Ethnicity | White 80.7% |
| Metro/Micro Stats Area | Tiffin, OH |
| US Congressional District(s) | Ohio 4th |
| State House Districts | 88 |
| State Senate Districts | 26 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 80.7% |
| African American | 2.63% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 16.67% |