| Place Name | Clark |
| Place Type | City |
| ZIP Code(s) | 57225 |
| County | Clark County |
| Area Code(s) | 605 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 1,219 |
| Population Growth Rate (2010-19) | 0.79% |
| Majority Ethnicity | White 93.63% |
| US Congressional District(s) | South Dakota At-Large |
| State House Districts | 2 |
| State Senate Districts | 2 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 93.63% |
| African American | 0.6% |
| Hispanic | 0.26% |
| Asian | 0.34% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 5.16% |