ZIP Code 58831 — Alexander, ND
58831 is a standard (street delivery) ZIP code serving Alexander, North Dakota, in McKenzie 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 58831 at a glance
| ZIP code | 58831 |
|---|---|
| Primary city | Alexander |
| State | North Dakota (ND) |
| County | McKenzie FIPS 38053 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,089 |
| Coordinates | 47.848780, -103.658430 |
How ZIP+4 works in 58831
The four digits after the hyphen encode a delivery segment inside 58831. 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 58831 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 58831.
| ZIP | City | Distance |
|---|---|---|
| 58835 | Arnegard, ND | 12.4 mi |
| 58838 | Cartwright, ND | 12.5 mi |
| 58853 | Trenton, ND | 15.9 mi |
| 58854 | Watford City, ND | 23.6 mi |
| 59221 | Fairview, MT | 24.7 mi |
| 58801 | Williston, ND | 27.1 mi |
| 59270 | Sidney, MT | 27.4 mi |
| 58843 | Epping, ND | 29.4 mi |
| 58634 | Grassy Butte, ND | 31.7 mi |
| 59217 | Crane, MT | 32.7 mi |
| 59212 | Bainville, MT | 33.5 mi |
| 58849 | Ray, ND | 39.3 mi |
Questions about 58831
What is the ZIP+4 code for 58831?
58831 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 58831, you need to look up a specific street address to get them.
What city is 58831?
58831 is assigned to Alexander, North Dakota, in McKenzie 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.