| Place Name | Decatur Township |
| Place Type | Township |
| ZIP Code(s) | 49045 49065 49079 |
| County | Van Buren County |
| Area Code(s) | 269 |
| Timezone | Eastern Standard Time (EST) |
| Population (2021) | 3,578 |
| Majority Ethnicity | White 88.69% |
| US Congressional District(s) | Michigan 6th |
| State House Districts | 66 |
| State Senate Districts | 26 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 88.69% |
| African American | 1.53% |
| Hispanic | 1.56% |
| Asian | 1.3% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 6.92% |