| Place Name | Marengo |
| Place Type | Village |
| ZIP Code(s) | 43334 |
| County | Morrow County |
| Area Code(s) | 419,567 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 303 |
| Population Growth Rate (2010-19) | -17.25% |
| Majority Ethnicity | White 99.25% |
| Metro/Micro Stats Area | Columbus, OH |
| US Congressional District(s) | Ohio 12th |
| State House Districts | 87 |
| State Senate Districts | 26 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 99.25% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.75% |