First Security Bank

By Telephone:

Missoula: (406) 728-3115
Toll Free: (888) 782-3115
24-Hour XPress Phone Banking: Missoula: (406) 329-1991
Toll Free: (877) 728-3115

Mailing Address:

PO Box 4506
Missoula, MT 59806
Click Here for information about Glacier
Bank, our parent company.

Our Locations: Our Bank Locations

 

Thompson Falls and Plains Region

By Telephone:

Thompson Falls: (406) 827-7000
Toll Free: (800) 837-3565

 

Plains: (406) 826-2000
Toll Free: (877) 826-2062
24-Hour XPress Phone Banking: Toll Free: (877) 728-3115

Mailing Address:

PO Box 3500
Thompson Falls, MT 59873-3500

 

PO Box 100
Plains, MT 59859-0100
Click Here for information about Glacier
Bank, our parent company.
Our Locations: Our Bank Locations

Hamilton Region

By Telephone:

Hamilton: (406) 363-3551
Toll Free: (888) 782-3115

 

Corvallis: (406) 961-4466
Toll Free: (888) 782-3115
24-Hour XPress Phone Banking: Toll Free: (877) 728-3115

Mailing Address:

P.O. Box 393 
Hamilton, MT 59840

 

297 Woodside Cutoff Road
Corvallis, MT 59828
Click Here for information about Glacier
Bank, our parent company.
Our Locations: Our Bank Locations