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> South Dakota > Zip Code 57031
| Zip Code : | 57031 |
| City : | Gayville town, Volin town |
| County : | Yankton County, Clay County |
| State : | South Dakota (SD) |
| Land Area : | 48.34 sq mi |
| Water Area : | 2.08 sq mi |
| Latitude : | 42.8753207 |
| Longitude : | -97.1857290 |
| Population (2010): | 741 |
| Population Estimate (2012) : | 740 |
| Population Density : | 15.33/sq mi |
| Housing Units (2012) : | 315 |
| Median Household Income (2012) : | $55,875 (South Dakota : $49,091, USA : $53,046) |
| Median Family Income (2012) : | $63,281 (South Dakota : $62,967, USA : $64,585) |
| Median House Price (2012) : | $84,600 (South Dakota : $129,800, USA : $181,400) |