ZIP Codes in Slidell, LA
Slidell uses 3 ZIP codes, all in St. Tammany County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 3 Slidell ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 70458 | standard | St. Tammany | 39,034 |
| 70460 | standard | St. Tammany | 21,669 |
| 70461 | standard | St. Tammany | 34,808 |
Finding a ZIP+4 in Slidell
Knowing which of these 3 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 Slidell 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 Slidell addresses and download it complete.