ZIP Code 58554 — Mandan, ND
58554 is a standard (street delivery) ZIP code serving Mandan, North Dakota, in Morton 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 58554 at a glance
| ZIP code | 58554 |
|---|---|
| Primary city | Mandan |
| State | North Dakota (ND) |
| County | Morton FIPS 38059 |
| ZIP type | Standard (street delivery) |
| Time zone | America/North_Dakota/New_Salem |
| Population | 29,479 |
| Coordinates | 46.751480, -100.950360 |
How ZIP+4 works in 58554
The four digits after the hyphen encode a delivery segment inside 58554. 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 58554 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 58554.
| ZIP | City | Distance |
|---|---|---|
| 58505 | Bismarck, ND | 9.3 mi |
| 58566 | Saint Anthony, ND | 12.1 mi |
| 58501 | Bismarck, ND | 12.6 mi |
| 58504 | Bismarck, ND | 12.9 mi |
| 58503 | Bismarck, ND | 14.2 mi |
| 58558 | Menoken, ND | 20.8 mi |
| 58535 | Flasher, ND | 23 mi |
| 58521 | Baldwin, ND | 23.2 mi |
| 58563 | New Salem, ND | 25 mi |
| 58570 | Solen, ND | 26.4 mi |
| 58530 | Center, ND | 28 mi |
| 58520 | Almont, ND | 28.4 mi |
Questions about 58554
What is the ZIP+4 code for 58554?
58554 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 58554, you need to look up a specific street address to get them.
What city is 58554?
58554 is assigned to Mandan, North Dakota, in Morton 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.