| City : | Grenville Town |
| County : | Brooks County, Day County |
| State : | South Dakota (SD) |
| | |
| Land Area : | 0.24 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 45.4669923 |
| Longitude : | -97.3902313 |
| | |
| Population (2010): | 54 |
| Population Estimate (2012) : | 80 |
| Population Density : | 228.17/sq mi |
| Housing Units (2012) : | 44 |
| Median Household Income (2012) : | $36,250 (South Dakota : $49,091, USA : $53,046) |
| Median Family Income (2012) : | $82,679 (South Dakota : $62,967, USA : $64,585) |
| Median House Price (2012) : | $85,000 (South Dakota : $129,800, USA : $181,400) |