ZIP Code 28103 — Marshville, NC
28103 is a standard (street delivery) ZIP code serving Marshville, North Carolina, in Union 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 28103 at a glance
| ZIP code | 28103 |
|---|---|
| Primary city | Marshville |
| State | North Carolina (NC) |
| County | Union FIPS 37179 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 10,714 |
| Coordinates | 35.003700, -80.353160 |
How ZIP+4 works in 28103
The four digits after the hyphen encode a delivery segment inside 28103. 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 28103 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 28103.
| ZIP | City | Distance |
|---|---|---|
| 28174 | Wingate, NC | 5.4 mi |
| 28133 | Peachland, NC | 7 mi |
| 28135 | Polkton, NC | 8.2 mi |
| 28110 | Monroe, NC | 10.8 mi |
| 28112 | Monroe, NC | 13.1 mi |
| 28170 | Wadesboro, NC | 14.7 mi |
| 28163 | Stanfield, NC | 14.7 mi |
| 28007 | Ansonville, NC | 15 mi |
| 28129 | Oakboro, NC | 15.8 mi |
| 28079 | Indian Trail, NC | 16 mi |
| 29728 | Pageland, SC | 16.5 mi |
| 28128 | Norwood, NC | 18.2 mi |
Questions about 28103
What is the ZIP+4 code for 28103?
28103 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 28103, you need to look up a specific street address to get them.
What city is 28103?
28103 is assigned to Marshville, North Carolina, in Union 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.