| Place Name | St. Henry |
| Place Type | Village |
| ZIP Code(s) | 45883 |
| County | Mercer County |
| Area Code(s) | 419,567 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 2,506 |
| Population Growth Rate (2010-19) | 6.96% |
| Majority Ethnicity | White 98.51% |
| Metro/Micro Stats Area | Celina, OH |
| US Congressional District(s) | Ohio 8th |
| State House Districts | 84 |
| State Senate Districts | 12 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 98.51% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.49% |