| City : | Eureka City |
| County : | Mcpherson County |
| State : | South Dakota (SD) |
| | |
| Land Area : | 0.93 sq mi |
| Water Area : | 0.07 sq mi |
| Latitude : | 45.7711410 |
| Longitude : | -99.6206300 |
| | |
| Population (2010): | 868 |
| Population Estimate (2012) : | 883 |
| Population Density : | 930.22/sq mi |
| Housing Units (2012) : | 649 |
| Median Household Income (2012) : | $30,431 (South Dakota : $49,091, USA : $53,046) |
| Median Family Income (2012) : | $63,977 (South Dakota : $62,967, USA : $64,585) |
| Median House Price (2012) : | $46,200 (South Dakota : $129,800, USA : $181,400) |