| Company | Category | Area | Address | Web | E-mail | Contact person |
| FIRST INTERSTATE INVESTMENT | Invest Firm General | Montana | 101 E FRONT ST, MISSOULA, Missoula, Montana, 59802-4405, USA |
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| FIRST INTERSTATE INVSTMNT SVC | Invest Firm General | Montana | 202 W MAIN ST, BOZEMAN, Gallatin, Montana, 59715-4647, USA |
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J C MURRAY |
| FIRST INTERSTATE PLAZA | Consulting Engineer | Montana | 127 E FRONT ST, MISSOULA, Missoula, Montana, 59802-4475, USA |
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| FIRST INTRSTATE BNK HARDIN OFF | State Commercial Bank | Montana | PO BOX 903, HARDIN, Big Horn, Montana, 59034-0903, USA |
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Cwilliam Fisher |
