ZIP Code 28320 — Bladenboro, NC
28320 is a standard (street delivery) ZIP code serving Bladenboro, North Carolina, in Bladen 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 28320 at a glance
| ZIP code | 28320 |
|---|---|
| Primary city | Bladenboro |
| State | North Carolina (NC) |
| County | Bladen FIPS 37017 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 7,962 |
| Coordinates | 34.553780, -78.774560 |
How ZIP+4 works in 28320
The four digits after the hyphen encode a delivery segment inside 28320. 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 28320 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 28320.
| ZIP | City | Distance |
|---|---|---|
| 28332 | Dublin, NC | 8.1 mi |
| 28433 | Clarkton, NC | 9.5 mi |
| 28358 | Lumberton, NC | 10.1 mi |
| 28392 | Tar Heel, NC | 12.5 mi |
| 28438 | Evergreen, NC | 12.6 mi |
| 28337 | Elizabethtown, NC | 13.4 mi |
| 28399 | White Oak, NC | 15.7 mi |
| 28359 | Lumberton, NC | 16.1 mi |
| 28375 | Proctorville, NC | 16.2 mi |
| 28431 | Chadbourn, NC | 16.8 mi |
| 28369 | Orrum, NC | 17.1 mi |
| 28434 | Council, NC | 18 mi |
Questions about 28320
What is the ZIP+4 code for 28320?
28320 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 28320, you need to look up a specific street address to get them.
What city is 28320?
28320 is assigned to Bladenboro, North Carolina, in Bladen 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.