ZIP Codes in Gretna, LA
Gretna uses 2 ZIP codes, all in Jefferson County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 2 Gretna ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 70053 | standard | Jefferson | 16,621 |
| 70056 | standard | Jefferson | 40,348 |
Finding a ZIP+4 in Gretna
Knowing which of these 2 ZIP codes covers an address only gets you partway. The four-digit extension identifies the specific delivery point — typically one side of one block. Two houses facing each other on the same Gretna street almost always have different ZIP+4 codes even though they share all five leading digits.
Appending ZIP+4 to a mailing list?
Upload a CSV of Gretna addresses and download it complete.