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> South Dakota > Zip Code 57030
| Zip Code : | 57030 |
| City : | Garretson city, Sherman town |
| County : | Rock County, Minnehaha County |
| State : | South Dakota (SD) |
| Land Area : | 150.20 sq mi |
| Water Area : | 0.39 sq mi |
| Latitude : | 43.7383040 |
| Longitude : | -96.5195612 |
| Population (2010): | 2,959 |
| Population Estimate (2012) : | 3,514 |
| Population Density : | 19.70/sq mi |
| Housing Units (2012) : | 1,145 |
| Median Household Income (2012) : | $70,028 (South Dakota : $49,091, USA : $53,046) |
| Median Family Income (2012) : | $86,500 (South Dakota : $62,967, USA : $64,585) |
| Median House Price (2012) : | $156,300 (South Dakota : $129,800, USA : $181,400) |