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> South Dakota > Zip Code 57239
| Zip Code : | 57239 |
| City : | Grenville town |
| County : | Day County |
| State : | South Dakota (SD) |
| Land Area : | 45.64 sq mi |
| Water Area : | 2.43 sq mi |
| Latitude : | 45.5092107 |
| Longitude : | -97.2992937 |
| Population (2010): | 223 |
| Population Estimate (2012) : | 325 |
| Population Density : | 4.89/sq mi |
| Housing Units (2012) : | 437 |
| Median Household Income (2012) : | $83,125 (South Dakota : $49,091, USA : $53,046) |
| Median Family Income (2012) : | $84,141 (South Dakota : $62,967, USA : $64,585) |
| Median House Price (2012) : | $113,300 (South Dakota : $129,800, USA : $181,400) |