ZIP Code 59055 — Melville, MT
59055 is a standard (street delivery) ZIP code serving Melville, Montana, in Sweet Grass 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 59055 at a glance
| ZIP code | 59055 |
|---|---|
| Primary city | Melville |
| State | Montana (MT) |
| County | Sweet Grass FIPS 30097 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 40 |
| Coordinates | 46.102820, -109.786620 |
How ZIP+4 works in 59055
The four digits after the hyphen encode a delivery segment inside 59055. 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 59055 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 59055.
| ZIP | City | Distance |
|---|---|---|
| 59011 | Big Timber, MT | 15.2 mi |
| 59078 | Shawmut, MT | 19.3 mi |
| 59085 | Two Dot, MT | 24.6 mi |
| 59036 | Harlowton, MT | 25.6 mi |
| 59033 | Greycliff, MT | 26.3 mi |
| 59067 | Rapelje, MT | 28 mi |
| 59069 | Reed Point, MT | 28.1 mi |
| 59074 | Ryegate, MT | 29.2 mi |
| 59082 | Springdale, MT | 30.2 mi |
| 59019 | Columbus, MT | 41.8 mi |
Questions about 59055
What is the ZIP+4 code for 59055?
59055 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 59055, you need to look up a specific street address to get them.
What city is 59055?
59055 is assigned to Melville, Montana, in Sweet Grass 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.