| Place Name | Buchanan Township |
| Place Type | Township |
| ZIP Code(s) | 49103 49107 49120 |
| County | Berrien County |
| Area Code(s) | 269 |
| Timezone | Eastern Standard Time (EST) |
| Population (2021) | 3,430 |
| Majority Ethnicity | White 97.33% |
| Metro/Micro Stats Area | Niles, MI |
| US Congressional District(s) | Michigan 6th |
| State House Districts | 78 |
| State Senate Districts | 21 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 97.33% |
| African American | 1.77% |
| Hispanic | 0.9% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |