| City : | Eureka City |
| County : | St. Louis County |
| State : | Missouri (MO) |
| | |
| Land Area : | 10.35 sq mi |
| Water Area : | 0.10 sq mi |
| Latitude : | 38.4991617 |
| Longitude : | -90.6478695 |
| | |
| Population (2010): | 10,189 |
| Population Estimate (2012) : | 10,122 |
| Population Density : | 984.21/sq mi |
| Housing Units (2012) : | 3,683 |
| Median Household Income (2012) : | $90,579 (Missouri : $47,333, USA : $53,046) |
| Median Family Income (2012) : | $102,757 (Missouri : $59,395, USA : $64,585) |
| Median House Price (2012) : | $232,000 (Missouri : $138,400, USA : $181,400) |