599
- 59901 Kalispell
- 59910 Big Arm
- 59911 Bigfork
- 59912 Columbia Falls
- 59913 Coram
- 59914 Dayton
- 59915 Elmo
- 59916 Essex
- 59917 Eureka
- 59918 Fortine
- 59919 Hungry Horse
- 59920 Kila
- 59922 Lakeside
- 59923 Libby
- 59925 Marion
- 59926 Martin City
- 59927 Olney
- 59928 Polebridge
- 59929 Proctor
- 59930 Rexford
- 59931 Rollins
- 59932 Somers
- 59933 Stryker
- 59934 Trego
- 59935 Troy
- 59936 West Glacier
- 59937 Whitefish