Front porch moments await you. Experience the many rewards of home ownership with a home loan from First Interstate, your full-service community banking partner. I Interstate Bank Built for you. firstinterstate.com Member FDIC. Equal Housing Lender. Bigfork 800 Grand Ave. 406-837-1600 Eureka 508 Hwy 93 N 406-297-3116 Kalispell: Main 2 Main St. 406-761-2500 Kalispell: Evergreen 100 E. Cottonwood Dr. 406-758-7600 Kalispell: North 100 Hutton Ranch Rd. 406-837-1600 Kalispell: Drive-Up 112 E. Montana St. 406-751-2500 Lakeside 7265 US Hwy. 93 S. 406-844-2535 Polson 49573 US Hwy. 93 406-883-8800 Whitefish 306 Spokane Ave. 406-863-8888 Front porch moments await you . Experience the many rewards of home ownership with a home loan from First Interstate , your full - service community banking partner . I Interstate Bank Built for you . firstinterstate.com Member FDIC . Equal Housing Lender . Bigfork 800 Grand Ave. 406-837-1600 Eureka 508 Hwy 93 N 406-297-3116 Kalispell : Main 2 Main St. 406-761-2500 Kalispell : Evergreen 100 E. Cottonwood Dr. 406-758-7600 Kalispell : North 100 Hutton Ranch Rd . 406-837-1600 Kalispell : Drive - Up 112 E. Montana St. 406-751-2500 Lakeside 7265 US Hwy . 93 S. 406-844-2535 Polson 49573 US Hwy . 93 406-883-8800 Whitefish 306 Spokane Ave. 406-863-8888