| Business | Phone |
| Gretna Police Dept 200 5th St, Gretna 70053 | (504) 366-4374 |
| Gretna Police Detective Bureau 200 5th St, Gretna 70053 | (504) 363-1529 |
| Gretna Police Records 2nd St & Huey P Long Aveamp;, Gretna 70053 | (504) 363-1546 |
| Gretna Police Records Div 200 Huey P Long Ave, Gretna 70053 | (504) 363-1547 |
| Gretna Police Training Academy 200 5th St, Gretna 70053 | (504) 363-1718 |
| Gretna Police Vehicle Mntnc 200 5th St, Gretna 70053 | (504) 363-1534 |
| Gretna Taxi & Alcohol Permits 200 Huey P Long Ave, Gretna 70053 | (504) 363-1512 |
| Jefferson Parish Sheriff's Office 100 Huey P Long Ave, Gretna 70053 | (504) 363-5500 |