Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| First Interstate Bank | Billings, MT | 10-09-1916 | $30,603,575 | BK |
| Glacier Bank | Kalispell, MT | 07-15-1955 | $27,724,419 | BK |
| Stockman Bank of Montana | Miles City, MT | 01-01-1944 | $6,331,965 | BK |
| WHITEFISH CREDIT UNION ASSOCIATION | Whitefish, MT | 01-01-1934 | $2,085,229 | CU |
| Opportunity Bank of Montana | Helena, MT | 01-01-1922 | $2,071,461 | BK |
| The Yellowstone Bank | Laurel, MT | 05-26-1926 | $1,386,430 | BK |
| Independence Bank | Havre, MT | 03-12-1973 | $1,196,296 | BK |
| CLEARWATER | Missoula, MT | 01-01-1956 | $1,031,816 | CU |
| TrailWest Bank | Lolo, MT | 05-17-1982 | $906,628 | BK |
| Bank of Bridger, National Association | Bridger, MT | 05-01-1906 | $733,942 | BK |
| Farmers State Bank | Victor, MT | 01-01-1907 | $718,321 | BK |
| American Bank | Bozeman, MT | 07-27-1970 | $622,378 | BK |
| First Montana Bank, Inc. | Missoula, MT | 01-01-1913 | $574,090 | BK |
| ALTANA | Billings, MT | 01-01-1949 | $560,485 | CU |
| VALLEY FINANCIAL | BILLINGS, MT | 01-01-1949 | $442,286 | CU |