| Place Name | Millbrook Township |
| Place Type | Township |
| ZIP Code(s) | 48850 48886 49310 49340 |
| County | Mecosta County |
| Area Code(s) | 989,231 |
| Timezone | Eastern Standard Time (EST) |
| Population (2021) | 882 |
| Majority Ethnicity | White 98.86% |
| Metro/Micro Stats Area | Big Rapids, MI |
| US Congressional District(s) | Michigan 4th |
| State House Districts | 102 |
| State Senate Districts | 33 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 98.86% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.14% |