| Place Name | Sumpter |
| Place Type | Town |
| ZIP Code(s) | 53561 53578 53913 53951 |
| County | Sauk County |
| Area Code(s) | 608 |
| Timezone | Central Standard Time (CST) |
| Population (2021) | 1,037 |
| Majority Ethnicity | White 65.41% |
| Metro/Micro Stats Area | Baraboo, WI |
| US Congressional District(s) | Wisconsin 2nd |
| State Assembly Districts | 81 |
| State Senate Districts | 27 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 65.41% |
| African American | 0.7% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 33.89% |