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> South Dakota > Zip Code 57620
| Zip Code : | 57620 |
| City : | Bison town |
| County : | Perkins County |
| State : | South Dakota (SD) |
| Land Area : | 368.18 sq mi |
| Water Area : | 2.24 sq mi |
| Latitude : | 45.3772582 |
| Longitude : | -102.5402121 |
| Population (2010): | 515 |
| Population Estimate (2012) : | 432 |
| Population Density : | 1.40/sq mi |
| Housing Units (2012) : | 273 |
| Median Household Income (2012) : | $46,125 (South Dakota : $49,091, USA : $53,046) |
| Median Family Income (2012) : | $68,750 (South Dakota : $62,967, USA : $64,585) |
| Median House Price (2012) : | $79,000 (South Dakota : $129,800, USA : $181,400) |