ZIP Code 28137 — Richfield, NC
28137 is a standard (street delivery) ZIP code serving Richfield, North Carolina, in Stanly 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 28137 at a glance
| ZIP code | 28137 |
|---|---|
| Primary city | Richfield |
| State | North Carolina (NC) |
| County | Stanly FIPS 37167 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,664 |
| Coordinates | 35.500090, -80.257830 |
How ZIP+4 works in 28137
The four digits after the hyphen encode a delivery segment inside 28137. 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 28137 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 28137.
| ZIP | City | Distance |
|---|---|---|
| 28109 | Misenheimer, NC | 1.9 mi |
| 28071 | Gold Hill, NC | 3.8 mi |
| 28127 | New London, NC | 6.2 mi |
| 28138 | Rockwell, NC | 10.4 mi |
| 28009 | Badin, NC | 10.6 mi |
| 28124 | Mount Pleasant, NC | 10.7 mi |
| 27351 | Southmont, NC | 11 mi |
| 28146 | Salisbury, NC | 11.4 mi |
| 28001 | Albemarle, NC | 11.7 mi |
| 27239 | Denton, NC | 11.9 mi |
| 28041 | Faith, NC | 13 mi |
| 28072 | Granite Quarry, NC | 13 mi |
Questions about 28137
What is the ZIP+4 code for 28137?
28137 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 28137, you need to look up a specific street address to get them.
What city is 28137?
28137 is assigned to Richfield, North Carolina, in Stanly 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.