| Place Name | Plainfield Township |
| Place Type | Township |
| County | Iosco County |
| Area Code(s) | 989 |
| Timezone | Eastern Standard Time (EST) |
| Population (2021) | 3,409 |
| Majority Ethnicity | White 94.96% |
| US Congressional District(s) | Michigan 5th |
| State House Districts | 106 |
| State Senate Districts | 36 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 94.96% |
| African American | 0% |
| Hispanic | 3.39% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.65% |