ZIP Code 28740 — Green Mountain, NC
28740 is a standard (street delivery) ZIP code serving Green Mountain, North Carolina, in Yancey 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 28740 at a glance
| ZIP code | 28740 |
|---|---|
| Primary city | Green Mountain |
| State | North Carolina (NC) |
| County | Yancey FIPS 37199 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,158 |
| Coordinates | 36.041180, -82.302870 |
How ZIP+4 works in 28740
The four digits after the hyphen encode a delivery segment inside 28740. 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 28740 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 28740.
| ZIP | City | Distance |
|---|---|---|
| 28705 | Bakersville, NC | 8.1 mi |
| 37650 | Erwin, TN | 9.8 mi |
| 37692 | Unicoi, TN | 9.9 mi |
| 28755 | Micaville, NC | 10.3 mi |
| 28714 | Burnsville, NC | 11.3 mi |
| 37657 | Flag Pond, TN | 14.5 mi |
| 37687 | Roan Mountain, TN | 15.3 mi |
| 28777 | Spruce Pine, NC | 16.1 mi |
| 28754 | Mars Hill, NC | 16.4 mi |
| 28664 | Plumtree, NC | 16.6 mi |
| 37658 | Hampton, TN | 17.5 mi |
| 28749 | Little Switzerland, NC | 17.9 mi |
Questions about 28740
What is the ZIP+4 code for 28740?
28740 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 28740, you need to look up a specific street address to get them.
What city is 28740?
28740 is assigned to Green Mountain, North Carolina, in Yancey 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.