| Place Name | Oak Grove Township |
| Place Type | Township |
| ZIP Code(s) | 47944 47971 47975 |
| County | Benton County |
| Area Code(s) | 765 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 1,840 |
| Majority Ethnicity | White 94.86% |
| Metro/Micro Stats Area | Lafayette-West Lafayette, IN |
| US Congressional District(s) | Indiana 4th |
| State House Districts | 13 |
| State Senate Districts | 6 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 94.86% |
| African American | 0.47% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.67% |