ZIP Code 59731 — Garrison, MT
59731 is a standard (street delivery) ZIP code serving Garrison, Montana, in Powell 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 59731 at a glance
| ZIP code | 59731 |
|---|---|
| Primary city | Garrison |
| State | Montana (MT) |
| County | Powell FIPS 30077 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 198 |
| Coordinates | 46.584550, -112.763260 |
How ZIP+4 works in 59731
The four digits after the hyphen encode a delivery segment inside 59731. 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 59731 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 59731.
| ZIP | City | Distance |
|---|---|---|
| 59733 | Gold Creek, MT | 9.2 mi |
| 59713 | Avon, MT | 9.7 mi |
| 59722 | Deer Lodge, MT | 16.1 mi |
| 59728 | Elliston, MT | 17.6 mi |
| 59843 | Helmville, MT | 21.7 mi |
| 59832 | Drummond, MT | 23 mi |
| 59640 | Marysville, MT | 23.4 mi |
| 59837 | Hall, MT | 24.6 mi |
| 59633 | Canyon Creek, MT | 25.1 mi |
| 59631 | Basin, MT | 27 mi |
| 59601 | Helena, MT | 28.1 mi |
| 59756 | Warm Springs, MT | 28.5 mi |
Questions about 59731
What is the ZIP+4 code for 59731?
59731 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 59731, you need to look up a specific street address to get them.
What city is 59731?
59731 is assigned to Garrison, Montana, in Powell 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.