Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| First Interstate Bank | Billings, MT | 10-09-1916 | $29,531,845 | BK |
| Glacier Bank | Kalispell, MT | 07-15-1955 | $28,188,019 | BK |
| Stockman Bank of Montana | Miles City, MT | 01-01-1944 | $6,616,231 | BK |
| Opportunity Bank of Montana | Helena, MT | 01-01-1922 | $2,142,054 | BK |
| WHITEFISH CREDIT UNION ASSOCIATION | Whitefish, MT | 01-01-1934 | $1,958,639 | CU |
| The Yellowstone Bank | Laurel, MT | 05-26-1926 | $1,355,378 | BK |
| Independence Bank | Havre, MT | 03-12-1973 | $1,256,460 | BK |
| CLEARWATER | Missoula, MT | 01-01-1956 | $1,093,214 | CU |
| TrailWest Bank | Lolo, MT | 05-17-1982 | $926,940 | BK |
| Bank of Bridger, National Association | Bridger, MT | 05-01-1906 | $757,319 | BK |
| Farmers State Bank | Victor, MT | 01-01-1907 | $731,941 | BK |
| American Bank | Bozeman, MT | 07-27-1970 | $619,716 | BK |
| First Montana Bank, Inc. | Missoula, MT | 01-01-1913 | $586,247 | BK |
| ALTANA | Billings, MT | 01-01-1949 | $583,174 | CU |
| VALLEY FINANCIAL | Billings, MT | 01-01-1949 | $496,998 | CU |