| 1 | Whitefish Credit Union Association Credit Union | Whitefish, MT | $2.06B | 64,905 | 0.38% |
| 2 | Clearwater Federal Credit Union | Missoula, MT | $1.15B | 67,211 | 0.94% |
| 3 | Altana Federal Credit Union | Billings, MT | $660.2M | 40,056 | 0.73% |
| 4 | Valley Financial Credit Union | Billings, MT | $593.7M | 38,943 | 0.87% |
| 5 | Rocky Mountain Credit Union | Helena, MT | $424.3M | 25,993 | 0.10% |
| 6 | Park Side Financial Credit Union | Whitefish, MT | $389.1M | 30,171 | 1.02% |
| 7 | Montana Federal Credit Union | Great Falls, MT | $358.9M | 26,193 | 0.91% |
| 8 | Intrepid Credit Union | Helena, MT | $310.5M | 18,704 | 0.65% |
| 9 | Billings Federal Credit Union | Billings, MT | $218.0M | 13,027 | 0.31% |
| 10 | 1St Liberty Federal Credit Union | Great Falls, MT | $217.5M | 14,437 | 0.28% |
| 11 | Southwest Montana Community Federal Credit Union | Anaconda, MT | $202.6M | 11,541 | 0.85% |
| 12 | Sky Federal Credit Union | Livingston, MT | $190.4M | 12,746 | 0.70% |
| 13 | Lincoln County Credit Union | Libby, MT | $182.4M | 5,698 | 2.06% |
| 14 | Grasslands Federal Credit Union | Circle, MT | $139.5M | 3,858 | 0.75% |
| 15 | Russell Country Federal Credit Union | Great Falls, MT | $132.9M | 9,897 | 0.27% |
| 16 | Fergus Federal Credit Union | Lewistown, MT | $118.9M | 6,485 | 1.99% |
| 17 | Richland Federal Credit Union | Sidney, MT | $117.7M | 4,834 | 1.24% |
| 18 | Daniels-Sheridan Federal Credit Union | Scobey, MT | $92.4M | 3,178 | 0.16% |
| 19 | Ravalli County Federal Credit Union | Hamilton, MT | $89.1M | 6,272 | 1.82% |
| 20 | Rimrock Credit Union | Billings, MT | $63.5M | 3,252 | 1.40% |
| 21 | Vocal Credit Union | Helena, MT | $52.0M | 4,324 | 1.36% |
| 22 | Community 1St Federal Credit Union | Miles City, MT | $44.1M | 3,924 | 1.08% |
| 23 | Badlands Federal Credit Union | Glendive, MT | $38.9M | 2,198 | 0.43% |
| 24 | Butte Community Federal Credit Union | Butte, MT | $37.4M | 2,773 | -0.50% |
| 25 | Northwestern Energy Employees Federal Credit Union | Butte, MT | $35.3M | 2,889 | 0.48% |
| 26 | Montana Educators' Credit Union | Missoula, MT | $35.2M | 1,661 | 1.26% |
| 27 | Mile High Federal Credit Union | Butte, MT | $29.2M | 1,721 | 0.65% |
| 28 | Glendive Bn Federal Credit Union | Glendive, MT | $28.5M | 1,645 | 1.33% |
| 29 | Seg Federal Credit Union | Laurel, MT | $25.5M | 1,992 | 1.39% |
| 30 | Mountain West Federal Credit Union | Butte, MT | $24.0M | 2,990 | 0.78% |
| 31 | Wolf Point Federal Credit Union | Wolf Point, MT | $23.0M | 3,236 | 0.68% |
| 32 | Bitterroot Community Federal Credit Union | Darby, MT | $18.6M | 2,168 | 0.85% |
| 33 | The Family First Federal Credit Union | Great Falls, MT | $17.6M | 1,689 | 1.38% |
| 34 | Fort Peck Community Federal Credit Union | Fort Peck, MT | $14.4M | 1,178 | 0.19% |
| 35 | Deer Lodge County School Emp Federal Credit Union | Anaconda, MT | $9.9M | 476 | 1.82% |
| 36 | St. Pats Employees Federal Credit Union | Missoula, MT | $5.5M | 649 | 0.96% |
| 37 | M D U Employees Federal Credit Union | Glendive, MT | $4.1M | 486 | 0.47% |
| 38 | The Morning Star Federal Credit Union | Lame Deer, MT | $2.5M | 2,430 | 0.42% |
| 39 | Tricounty Federal Credit Union | Harlowton, MT | $1.9M | 227 | -1.16% |
| 40 | Froid Federal Credit Union | Froid, MT | $1.2M | 165 | 1.02% |
| 41 | Northern Montana Hospital Federal Credit Union | Havre, MT | $1.0M | 188 | 0.27% |