| Place Name | Gretna |
| Place Type | City |
| ZIP Code(s) | 70053 70056 |
| County | Jefferson Parish |
| Area Code(s) | 504 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 17,720 |
| Population Growth Rate (2010-19) | 0.44% |
| Majority Ethnicity | White 48.46% |
| Metro/Micro Stats Area | New Orleans-Metairie, LA |
| US Congressional District(s) | Louisiana 2nd |
| State House Districts | 85 |
| State Senate Districts | 3,7 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 48.46% |
| African American | 30.32% |
| Hispanic | 0.23% |
| Asian | 2.57% |
| Native American | 0.04% |
| Hawaiin/Pacific Islander | 18.39% |