| City : | Groton City |
| County : | Brown County, Gloucester County |
| State : | South Dakota (SD) |
| | |
| Land Area : | 1.75 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 45.4516770 |
| Longitude : | -98.1000759 |
| | |
| Population (2010): | 1,458 |
| Population Estimate (2012) : | 1,555 |
| Population Density : | 832.52/sq mi |
| Housing Units (2012) : | 630 |
| Median Household Income (2012) : | $60,208 (South Dakota : $49,091, USA : $53,046) |
| Median Family Income (2012) : | $70,750 (South Dakota : $62,967, USA : $64,585) |
| Median House Price (2012) : | $119,800 (South Dakota : $129,800, USA : $181,400) |