ZIP Code 71378 — Wisner, LA
71378 is a standard (street delivery) ZIP code serving Wisner, Louisiana, in Franklin County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 71378 at a glance
| ZIP code | 71378 |
|---|---|
| Primary city | Wisner |
| State | Louisiana (LA) |
| County | Franklin FIPS 22041 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 2,163 |
| Coordinates | 31.954810, -91.712110 |
How ZIP+4 works in 71378
The four digits after the hyphen encode a delivery segment inside 71378. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 71378 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 71378.
| ZIP | City | Distance |
|---|---|---|
| 71243 | Fort Necessity, LA | 5.6 mi |
| 71368 | Sicily Island, LA | 6.5 mi |
| 71336 | Gilbert, LA | 8.3 mi |
| 71425 | Enterprise, LA | 11.8 mi |
| 71295 | Winnsboro, LA | 13.2 mi |
| 71326 | Clayton, LA | 14.5 mi |
| 71340 | Harrisonburg, LA | 14.8 mi |
| 71375 | Waterproof, LA | 15.9 mi |
| 71401 | Aimwell, LA | 17.5 mi |
| 71230 | Crowville, LA | 20.9 mi |
| 71366 | Saint Joseph, LA | 20.9 mi |
| 71334 | Ferriday, LA | 21.4 mi |
Questions about 71378
What is the ZIP+4 code for 71378?
71378 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 71378, you need to look up a specific street address to get them.
What city is 71378?
71378 is assigned to Wisner, Louisiana, in Franklin County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.