First Interstate Bank

Find First Interstate Bank branches.

First Interstate Bank Branches by States
Idaho	Montana	Oregon	South Dakota	Washington
Wyoming

First Interstate Bank Branches by Major Cities
Billings (8)	Bend (8)	Coeur D Alene (5)	Medford (5)
Helena (5)	Boise (4)	Bozeman (4)	Missoula (4)
Spokane (4)	Kalispell (4)	Lynnwood (3)	Great Falls (3)
Grants Pass (3)	Spearfish (2)	Colfax (2)	Jackson (2)
Sheridan (2)	Meridian (2)	Belgrade (2)	Rapid City (2)

What is the routing number? A routing number is a nine-digit numeric code printed on the bottom of checks that is used to facilitate the electronic routing of funds (ACH transfer) from one bank account to another. It's also referred to as RTN, routing transit number or bank routing number. Read more (Enter complete or partial bank name to find details) (Enter complete or partial routing number to find details)

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