| Place Name | Southeast Yankton |
| Place Type | Unincorporated Territory |
| ZIP Code(s) | 57031 57046 57078 |
| County | Yankton County |
| Area Code(s) | 605 |
| Timezone | Central Daylight Time (CDT) |
| Population (2021) | 799 |
| Majority Ethnicity | White 93.82% |
| Metro/Micro Stats Area | Yankton, SD |
| US Congressional District(s) | South Dakota At-Large |
| State House Districts | 18 |
| State Senate Districts | 18 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 93.82% |
| African American | 0% |
| Hispanic | 1.77% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.41% |