| City : | Castlewood City |
| County : | Hamlin County, Montgomery County, New Hanover County, Rusk County |
| State : | South Dakota (SD) |
| | |
| Land Area : | 1.15 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 44.7241577 |
| Longitude : | -97.0309205 |
| | |
| Population (2010): | 627 |
| Population Estimate (2012) : | 688 |
| Population Density : | 545.07/sq mi |
| Housing Units (2012) : | 292 |
| Median Household Income (2012) : | $45,357 (South Dakota : $49,091, USA : $53,046) |
| Median Family Income (2012) : | $53,333 (South Dakota : $62,967, USA : $64,585) |
| Median House Price (2012) : | $96,300 (South Dakota : $129,800, USA : $181,400) |