ZIP Code 58011 — Buffalo, ND
58011 is a standard (street delivery) ZIP code serving Buffalo, North Dakota, in Cass 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 58011 at a glance
| ZIP code | 58011 |
|---|---|
| Primary city | Buffalo |
| State | North Dakota (ND) |
| County | Cass FIPS 38017 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 449 |
| Coordinates | 46.927110, -97.544650 |
How ZIP+4 works in 58011
The four digits after the hyphen encode a delivery segment inside 58011. 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 58011 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 58011.
| ZIP | City | Distance |
|---|---|---|
| 58071 | Tower City, ND | 6.6 mi |
| 58002 | Absaraka, ND | 7.3 mi |
| 58007 | Ayr, ND | 7.9 mi |
| 58079 | Wheatland, ND | 10.1 mi |
| 58063 | Oriska, ND | 12.6 mi |
| 58031 | Fingal, ND | 12.8 mi |
| 58029 | Erie, ND | 15 mi |
| 58004 | Amenia, ND | 15 mi |
| 58064 | Page, ND | 15.9 mi |
| 58012 | Casselton, ND | 18.1 mi |
| 58006 | Arthur, ND | 19.9 mi |
| 58027 | Enderlin, ND | 20.6 mi |
Questions about 58011
What is the ZIP+4 code for 58011?
58011 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 58011, you need to look up a specific street address to get them.
What city is 58011?
58011 is assigned to Buffalo, North Dakota, in Cass 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.