| Place Name | Decatur |
| Place Type | Village |
| ZIP Code(s) | 49045 |
| County | Van Buren County |
| Area Code(s) | 269 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 2,076 |
| Population Growth Rate (2010-19) | -9.24% |
| Majority Ethnicity | White 83.75% |
| US Congressional District(s) | Michigan 6th |
| State House Districts | 66 |
| State Senate Districts | 26 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 83.75% |
| African American | 2.38% |
| Hispanic | 0.58% |
| Asian | 1.45% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 11.83% |