USA
> South Dakota > Zip Code 57445
| Zip Code : | 57445 |
| City : | Groton city |
| County : | Brown County |
| State : | South Dakota (SD) |
| Land Area : | 255.96 sq mi |
| Water Area : | 0.09 sq mi |
| Latitude : | 45.4655374 |
| Longitude : | -98.1149671 |
| Population (2010): | 2,068 |
| Population Estimate (2012) : | 2,080 |
| Population Density : | 8.08/sq mi |
| Housing Units (2012) : | 894 |
| Median Household Income (2012) : | $63,125 (South Dakota : $49,091, USA : $53,046) |
| Median Family Income (2012) : | $70,313 (South Dakota : $62,967, USA : $64,585) |
| Median House Price (2012) : | $125,600 (South Dakota : $129,800, USA : $181,400) |