ZIP Code 28339 — Erwin, NC
28339 is a standard (street delivery) ZIP code serving Erwin, North Carolina, in Harnett 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 28339 at a glance
| ZIP code | 28339 |
|---|---|
| Primary city | Erwin |
| State | North Carolina (NC) |
| County | Harnett FIPS 37085 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 6,894 |
| Coordinates | 35.314090, -78.721150 |
How ZIP+4 works in 28339
The four digits after the hyphen encode a delivery segment inside 28339. 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 28339 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 28339.
| ZIP | City | Distance |
|---|---|---|
| 28323 | Bunnlevel, NC | 6.6 mi |
| 27506 | Buies Creek, NC | 6.6 mi |
| 28356 | Linden, NC | 7 mi |
| 27521 | Coats, NC | 7.7 mi |
| 28331 | Cumberland, NC | 8.9 mi |
| 28334 | Dunn, NC | 9.1 mi |
| 27546 | Lillington, NC | 9.5 mi |
| 28342 | Falcon, NC | 9.5 mi |
| 28344 | Godwin, NC | 11.5 mi |
| 27501 | Angier, NC | 12.1 mi |
| 28395 | Wade, NC | 12.3 mi |
| 27504 | Benson, NC | 12.8 mi |
Questions about 28339
What is the ZIP+4 code for 28339?
28339 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 28339, you need to look up a specific street address to get them.
What city is 28339?
28339 is assigned to Erwin, North Carolina, in Harnett 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.