| City : | Gretna City |
| County : | Jefferson Parish |
| State : | Louisiana (LA) |
| | |
| Land Area : | 4.04 sq mi |
| Water Area : | 0.47 sq mi |
| Latitude : | 29.9109575 |
| Longitude : | -90.0517245 |
| | |
| Population (2010): | 17,736 |
| Population Estimate (2012) : | 17,720 |
| Population Density : | 4,395.53/sq mi |
| Housing Units (2012) : | 7,962 |
| Median Household Income (2012) : | $35,536 (Louisiana : $44,673, USA : $53,046) |
| Median Family Income (2012) : | $44,144 (Louisiana : $56,047, USA : $64,585) |
| Median House Price (2012) : | $148,300 (Louisiana : $137,700, USA : $181,400) |