ZIP Code 28431 — Chadbourn, NC
28431 is a standard (street delivery) ZIP code serving Chadbourn, North Carolina, in Columbus 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 28431 at a glance
| ZIP code | 28431 |
|---|---|
| Primary city | Chadbourn |
| State | North Carolina (NC) |
| County | Columbus FIPS 37047 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 5,901 |
| Coordinates | 34.316610, -78.843970 |
How ZIP+4 works in 28431
The four digits after the hyphen encode a delivery segment inside 28431. 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 28431 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 28431.
| ZIP | City | Distance |
|---|---|---|
| 28430 | Cerro Gordo, NC | 5.6 mi |
| 28438 | Evergreen, NC | 8.2 mi |
| 28424 | Brunswick, NC | 8.4 mi |
| 28472 | Whiteville, NC | 9.2 mi |
| 28439 | Fair Bluff, NC | 9.6 mi |
| 28432 | Clarendon, NC | 11.2 mi |
| 29545 | Green Sea, SC | 12.8 mi |
| 28369 | Orrum, NC | 12.8 mi |
| 28442 | Hallsboro, NC | 13.9 mi |
| 28463 | Tabor City, NC | 15.2 mi |
| 28375 | Proctorville, NC | 15.9 mi |
| 28362 | Marietta, NC | 16.6 mi |
Questions about 28431
What is the ZIP+4 code for 28431?
28431 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 28431, you need to look up a specific street address to get them.
What city is 28431?
28431 is assigned to Chadbourn, North Carolina, in Columbus 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.