ZIP Code 59931 — Rollins, MT
59931 is a standard (street delivery) ZIP code serving Rollins, Montana, in Lake 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 59931 at a glance
| ZIP code | 59931 |
|---|---|
| Primary city | Rollins |
| State | Montana (MT) |
| County | Lake FIPS 30047 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 335 |
| Coordinates | 47.920800, -114.254860 |
How ZIP+4 works in 59931
The four digits after the hyphen encode a delivery segment inside 59931. 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 59931 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 59931.
| ZIP | City | Distance |
|---|---|---|
| 59914 | Dayton, MT | 4.1 mi |
| 59922 | Lakeside, MT | 5.6 mi |
| 59910 | Big Arm, MT | 6.8 mi |
| 59929 | Proctor, MT | 6.8 mi |
| 59932 | Somers, MT | 8.9 mi |
| 59915 | Elmo, MT | 10 mi |
| 59860 | Polson, MT | 14.8 mi |
| 59920 | Kila, MT | 16.3 mi |
| 59911 | Bigfork, MT | 17.6 mi |
| 59901 | Kalispell, MT | 22.4 mi |
| 59845 | Hot Springs, MT | 22.6 mi |
| 59855 | Pablo, MT | 23 mi |
Questions about 59931
What is the ZIP+4 code for 59931?
59931 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 59931, you need to look up a specific street address to get them.
What city is 59931?
59931 is assigned to Rollins, Montana, in Lake 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.