| Place Name | Summit Township (Lake County) |
| Place Type | Township |
| ZIP Code(s) | 57050 57057 57071 |
| County | Lake County |
| Area Code(s) | 605 |
| Timezone | Central Standard Time (CST) |
| Population (2021) | 252 |
| Majority Ethnicity | White 97.62% |
| US Congressional District(s) | South Dakota At-Large |
| State House Districts | 8 |
| State Senate Districts | 8 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 97.62% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 2.38% |