ZIP Code 28631 — Grassy Creek, NC
28631 is a standard (street delivery) ZIP code serving Grassy Creek, North Carolina, in Ashe 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 28631 at a glance
| ZIP code | 28631 |
|---|---|
| Primary city | Grassy Creek |
| State | North Carolina (NC) |
| County | Ashe FIPS 37009 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 684 |
| Coordinates | 36.552180, -81.409940 |
How ZIP+4 works in 28631
The four digits after the hyphen encode a delivery segment inside 28631. 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 28631 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 28631.
| ZIP | City | Distance |
|---|---|---|
| 24363 | Mouth Of Wilson, VA | 4.3 mi |
| 28617 | Crumpler, NC | 4.9 mi |
| 28663 | Piney Creek, NC | 6.2 mi |
| 28672 | Scottville, NC | 6.6 mi |
| 28643 | Lansing, NC | 7.1 mi |
| 24378 | Troutdale, VA | 9.7 mi |
| 28693 | Warrensville, NC | 10 mi |
| 28640 | Jefferson, NC | 10.2 mi |
| 24292 | Whitetop, VA | 10.3 mi |
| 28644 | Laurel Springs, NC | 11.5 mi |
| 28694 | West Jefferson, NC | 13.6 mi |
| 24348 | Independence, VA | 14.4 mi |
Questions about 28631
What is the ZIP+4 code for 28631?
28631 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 28631, you need to look up a specific street address to get them.
What city is 28631?
28631 is assigned to Grassy Creek, North Carolina, in Ashe 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.