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> South Dakota > Zip Code 57717
| Zip Code : | 57717 |
| City : | Belle Fourche city, Fruitdale town, Spearfish city |
| County : | Harding County, Lawrence County, Butte County, Crook County |
| State : | South Dakota (SD) |
| Land Area : | 1,240.94 sq mi |
| Water Area : | 12.60 sq mi |
| Latitude : | 44.9402001 |
| Longitude : | -103.9019606 |
| Population (2010): | 8,007 |
| Population Estimate (2012) : | 7,453 |
| Population Density : | 6.45/sq mi |
| Housing Units (2012) : | 3,552 |
| Median Household Income (2012) : | $41,528 (South Dakota : $49,091, USA : $53,046) |
| Median Family Income (2012) : | $60,925 (South Dakota : $62,967, USA : $64,585) |
| Median House Price (2012) : | $126,100 (South Dakota : $129,800, USA : $181,400) |