ZIP Code 58237 — Grafton, ND
58237 is a standard (street delivery) ZIP code serving Grafton, North Dakota, in Walsh 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 58237 at a glance
| ZIP code | 58237 |
|---|---|
| Primary city | Grafton |
| State | North Dakota (ND) |
| County | Walsh FIPS 38099 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 4,994 |
| Coordinates | 48.415220, -97.400860 |
How ZIP+4 works in 58237
The four digits after the hyphen encode a delivery segment inside 58237. 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 58237 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 58237.
| ZIP | City | Distance |
|---|---|---|
| 58261 | Minto, ND | 13.8 mi |
| 58276 | Saint Thomas, ND | 14.5 mi |
| 58273 | Pisek, ND | 14.5 mi |
| 58243 | Hoople, ND | 14.5 mi |
| 58225 | Drayton, ND | 16 mi |
| 58233 | Forest River, ND | 16.2 mi |
| 58270 | Park River, ND | 17.8 mi |
| 56744 | Oslo, MN | 18.3 mi |
| 58222 | Crystal, ND | 19 mi |
| 58236 | Glasston, ND | 21.5 mi |
| 58235 | Gilby, ND | 22.7 mi |
| 56710 | Alvarado, MN | 22.9 mi |
Questions about 58237
What is the ZIP+4 code for 58237?
58237 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 58237, you need to look up a specific street address to get them.
What city is 58237?
58237 is assigned to Grafton, North Dakota, in Walsh 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.