| ZIP Code | ZIP Code Place Name | County | ZIP Code Type |
|---|---|---|---|
| 59845 | Hot Springs | Sanders County | Standard |
| 59901 | Kalispell | Flathead County | Standard |
| 59903 | Kalispell | Flathead County | PO Box |
| 59904 | Kalispell | Flathead County | PO Box |
| 59911 | Bigfork | Lake County | Standard |
| 59912 | Columbia Falls | Flathead County | Standard |
| 59913 | Coram | Flathead County | PO Box |
| 59916 | Essex | Flathead County | Standard |
| 59917 | Eureka | Lincoln County | Standard |
| 59919 | Hungry Horse | Flathead County | PO Box |
| 59920 | Kila | Flathead County | Standard |
| 59921 | Lake Mc Donald | Flathead County | PO Box |
| 59922 | Lakeside | Flathead County | Standard |
| 59925 | Marion | Flathead County | Standard |
| 59926 | Martin City | Flathead County | Standard |
| 59927 | Olney | Flathead County | PO Box |
| 59928 | Polebridge | Flathead County | Standard |
| 59932 | Somers | Flathead County | Standard |
| 59936 | West Glacier | Flathead County | PO Box |
| 59937 | Whitefish | Flathead County | Standard |