| Place Name | Portsmouth Charter Township |
| Place Type | Charter Township |
| ZIP Code(s) | 48706 48708 48747 |
| County | Bay County |
| Area Code(s) | 989 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 3,225 |
| Majority Ethnicity | White 97.26% |
| Metro/Micro Stats Area | Bay City, MI |
| US Congressional District(s) | Michigan 5th |
| State House Districts | 96 |
| State Senate Districts | 31 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 97.26% |
| African American | 0.93% |
| Hispanic | 0.78% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.03% |