ZIP Code 28660 — Olin, NC
28660 is a standard (street delivery) ZIP code serving Olin, North Carolina, in Iredell 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 28660 at a glance
| ZIP code | 28660 |
|---|---|
| Primary city | Olin |
| State | North Carolina (NC) |
| County | Iredell FIPS 37097 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,501 |
| Coordinates | 35.968900, -80.857850 |
How ZIP+4 works in 28660
The four digits after the hyphen encode a delivery segment inside 28660. 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 28660 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 28660.
| ZIP | City | Distance |
|---|---|---|
| 28634 | Harmony, NC | 5.7 mi |
| 28689 | Union Grove, NC | 6.6 mi |
| 28625 | Statesville, NC | 7.4 mi |
| 27020 | Hamptonville, NC | 9.7 mi |
| 28636 | Hiddenite, NC | 11.8 mi |
| 28678 | Stony Point, NC | 14.6 mi |
| 27055 | Yadkinville, NC | 15.9 mi |
| 28670 | Ronda, NC | 16 mi |
| 27028 | Mocksville, NC | 16.1 mi |
| 28677 | Statesville, NC | 16.4 mi |
| 27013 | Cleveland, NC | 17 mi |
| 28654 | Moravian Falls, NC | 17.6 mi |
Questions about 28660
What is the ZIP+4 code for 28660?
28660 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 28660, you need to look up a specific street address to get them.
What city is 28660?
28660 is assigned to Olin, North Carolina, in Iredell 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.