ZIP Code 58559 — Mercer, ND
58559 is a standard (street delivery) ZIP code serving Mercer, North Dakota, in McLean 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 58559 at a glance
| ZIP code | 58559 |
|---|---|
| Primary city | Mercer |
| State | North Dakota (ND) |
| County | McLean FIPS 38055 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 411 |
| Coordinates | 47.484900, -100.712950 |
How ZIP+4 works in 58559
The four digits after the hyphen encode a delivery segment inside 58559. 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 58559 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 58559.
| ZIP | City | Distance |
|---|---|---|
| 58575 | Turtle Lake, ND | 10 mi |
| 58463 | Mcclusky, ND | 11.7 mi |
| 58723 | Butte, ND | 19.3 mi |
| 58577 | Washburn, ND | 19.5 mi |
| 58477 | Regan, ND | 20.3 mi |
| 58579 | Wilton, ND | 21 mi |
| 58430 | Denhoff, ND | 21.2 mi |
| 58778 | Ruso, ND | 22.6 mi |
| 58576 | Underwood, ND | 23.7 mi |
| 58531 | Coleharbor, ND | 23.8 mi |
| 58716 | Benedict, ND | 27.1 mi |
| 58444 | Goodrich, ND | 27.1 mi |
Questions about 58559
What is the ZIP+4 code for 58559?
58559 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 58559, you need to look up a specific street address to get them.
What city is 58559?
58559 is assigned to Mercer, North Dakota, in McLean 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.