| Zip Code : | 63019 |
| City : | Crystal city, Herculaneum city |
| County : | Jefferson County |
| State : | Missouri (MO) |
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| Land Area : | 3.28 sq mi |
| Water Area : | 0.43 sq mi |
| Latitude : | 38.2263616 |
| Longitude : | -90.3769920 |
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| Population (2010): | 4,449 |
| Population Estimate (2012) : | 4,512 |
| Population Density : | 1,356.86/sq mi |
| Housing Units (2012) : | 1,937 |
| Median Household Income (2012) : | $51,338 (Missouri : $47,333, USA : $53,046) |
| Median Family Income (2012) : | $59,643 (Missouri : $59,395, USA : $64,585) |
| Median House Price (2012) : | $124,900 (Missouri : $138,400, USA : $181,400) |