ZIP Code 59483 — Sun River, MT
59483 is a standard (street delivery) ZIP code serving Sun River, Montana, in Cascade 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 59483 at a glance
| ZIP code | 59483 |
|---|---|
| Primary city | Sun River |
| State | Montana (MT) |
| County | Cascade FIPS 30013 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 247 |
| Coordinates | 47.472120, -111.722610 |
How ZIP+4 works in 59483
The four digits after the hyphen encode a delivery segment inside 59483. 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 59483 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 59483.
| ZIP | City | Distance |
|---|---|---|
| 59485 | Ulm, MT | 7.8 mi |
| 59443 | Fort Shaw, MT | 7.9 mi |
| 59487 | Vaughn, MT | 8.5 mi |
| 59477 | Simms, MT | 11.9 mi |
| 59468 | Power, MT | 17.2 mi |
| 59421 | Cascade, MT | 18.7 mi |
| 59436 | Fairfield, MT | 19.7 mi |
| 59404 | Great Falls, MT | 20.7 mi |
| 59401 | Great Falls, MT | 21 mi |
| 59414 | Black Eagle, MT | 21.5 mi |
| 59405 | Great Falls, MT | 25.3 mi |
| 59472 | Sand Coulee, MT | 26.5 mi |
Questions about 59483
What is the ZIP+4 code for 59483?
59483 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 59483, you need to look up a specific street address to get them.
What city is 59483?
59483 is assigned to Sun River, Montana, in Cascade 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.