ZIP Code 59258 — Reserve, MT
59258 is a standard (street delivery) ZIP code serving Reserve, Montana, in Sheridan 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 59258 at a glance
| ZIP code | 59258 |
|---|---|
| Primary city | Reserve |
| State | Montana (MT) |
| County | Sheridan FIPS 30091 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 184 |
| Coordinates | 48.570250, -104.735000 |
How ZIP+4 works in 59258
The four digits after the hyphen encode a delivery segment inside 59258. 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 59258 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 59258.
| ZIP | City | Distance |
|---|---|---|
| 59247 | Medicine Lake, MT | 10.4 mi |
| 59242 | Homestead, MT | 12.2 mi |
| 59254 | Plentywood, MT | 14.1 mi |
| 59257 | Redstone, MT | 15.8 mi |
| 59226 | Froid, MT | 18.6 mi |
| 59211 | Antelope, MT | 19.4 mi |
| 59222 | Flaxville, MT | 21.2 mi |
| 59252 | Outlook, MT | 24.9 mi |
| 59256 | Raymond, MT | 25.5 mi |
| 59219 | Dagmar, MT | 26.5 mi |
| 59213 | Brockton, MT | 27.8 mi |
| 59255 | Poplar, MT | 30.6 mi |
Questions about 59258
What is the ZIP+4 code for 59258?
59258 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 59258, you need to look up a specific street address to get them.
What city is 59258?
59258 is assigned to Reserve, Montana, in Sheridan 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.