ZIP Code 58257 — Mayville, ND
58257 is a standard (street delivery) ZIP code serving Mayville, North Dakota, in Traill 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 58257 at a glance
| ZIP code | 58257 |
|---|---|
| Primary city | Mayville |
| State | North Dakota (ND) |
| County | Traill FIPS 38097 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 2,180 |
| Coordinates | 47.490330, -97.285050 |
How ZIP+4 works in 58257
The four digits after the hyphen encode a delivery segment inside 58257. 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 58257 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 58257.
| ZIP | City | Distance |
|---|---|---|
| 58274 | Portland, ND | 9.6 mi |
| 58009 | Blanchard, ND | 11.5 mi |
| 58016 | Clifford, ND | 11.9 mi |
| 58223 | Cummings, ND | 12.2 mi |
| 58218 | Buxton, ND | 13 mi |
| 58240 | Hatton, ND | 13.4 mi |
| 58045 | Hillsboro, ND | 14.2 mi |
| 58275 | Reynolds, ND | 16.1 mi |
| 58035 | Galesburg, ND | 17.3 mi |
| 58219 | Caledonia, ND | 19 mi |
| 58048 | Hunter, ND | 20.3 mi |
| 58278 | Thompson, ND | 21.1 mi |
Questions about 58257
What is the ZIP+4 code for 58257?
58257 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 58257, you need to look up a specific street address to get them.
What city is 58257?
58257 is assigned to Mayville, North Dakota, in Traill 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.