| Population | 17 (2010), see rank |
| House Units | 16, see rank |
| Race | Whites:94.1%, Hispanics:0%, Blacks:0%, Asians:0%, Others:5.9% |
| Total Area: | 0.01 sq mi |
| Water Area: | 0.00 sq mi (0.00%) |
| State: | South Dakota |
| Area: | Watertown, SD |
| County: | Hamlin County |
| City: | Castlewood |
| Census Tract: | 955100 |
| Census Block Group: | 955100-1 |