ZIP Code 28689 — Union Grove, NC
28689 is a standard (street delivery) ZIP code serving Union Grove, 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 28689 at a glance
| ZIP code | 28689 |
|---|---|
| Primary city | Union Grove |
| State | North Carolina (NC) |
| County | Iredell FIPS 37097 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,188 |
| Coordinates | 36.043190, -80.933450 |
How ZIP+4 works in 28689
The four digits after the hyphen encode a delivery segment inside 28689. 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 28689 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 28689.
| ZIP | City | Distance |
|---|---|---|
| 28660 | Olin, NC | 6.6 mi |
| 27020 | Hamptonville, NC | 8 mi |
| 28636 | Hiddenite, NC | 10.1 mi |
| 28670 | Ronda, NC | 10.5 mi |
| 28634 | Harmony, NC | 11.1 mi |
| 28659 | North Wilkesboro, NC | 11.8 mi |
| 28654 | Moravian Falls, NC | 12.2 mi |
| 28625 | Statesville, NC | 12.6 mi |
| 28669 | Roaring River, NC | 13 mi |
| 28642 | Jonesville, NC | 14.1 mi |
| 28697 | Wilkesboro, NC | 14.3 mi |
| 28678 | Stony Point, NC | 16 mi |
Questions about 28689
What is the ZIP+4 code for 28689?
28689 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 28689, you need to look up a specific street address to get them.
What city is 28689?
28689 is assigned to Union Grove, 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.