ZIP Code 71418 — Columbia, LA
71418 is a standard (street delivery) ZIP code serving Columbia, Louisiana, in Caldwell 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 71418 at a glance
| ZIP code | 71418 |
|---|---|
| Primary city | Columbia |
| State | Louisiana (LA) |
| County | Caldwell FIPS 22021 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 5,233 |
| Coordinates | 32.134050, -92.045890 |
How ZIP+4 works in 71418
The four digits after the hyphen encode a delivery segment inside 71418. 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 71418 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 71418.
| ZIP | City | Distance |
|---|---|---|
| 71415 | Clarks, LA | 9.4 mi |
| 71435 | Grayson, LA | 9.8 mi |
| 71441 | Kelly, LA | 14 mi |
| 71259 | Mangham, LA | 15.1 mi |
| 71202 | Monroe, LA | 18.1 mi |
| 71243 | Fort Necessity, LA | 18.4 mi |
| 71425 | Enterprise, LA | 18.9 mi |
| 71295 | Winnsboro, LA | 19.8 mi |
| 71465 | Olla, LA | 20.5 mi |
| 71292 | West Monroe, LA | 21 mi |
| 71218 | Archibald, LA | 21.3 mi |
| 71473 | Sikes, LA | 22.7 mi |
Questions about 71418
What is the ZIP+4 code for 71418?
71418 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 71418, you need to look up a specific street address to get them.
What city is 71418?
71418 is assigned to Columbia, Louisiana, in Caldwell 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.