First Interstate Bank branch locations
274 active branches in FDIC records across 10 states.
By state
Largest branches by deposits (2026)
- 401 N 31st St, Billings, MT$1.1B
- 101 E Front St, Missoula, MT$600M
- 225 S Main Ave, Sioux Falls, SD$486M
- 1100 Nw Wall St, Bend, OR$389M
- 104 S Wolcott St, Casper, WY$358M
- 802 W Broadway Ave, Jackson, WY$350M
- 323 E Main St, Riverton, WY$344M
- 2601 10th Ave S, Great Falls, MT$331M
- 333 West Blvd, Rapid City, SD$327M
- 10101 University Ave, Clive, IA$324M
- 221 E Ivinson Ave, Laramie, WY$304M
- 25 E Lyndale Ave, Helena, MT$278M
- 9290 W Dodge Rd, Omaha, NE$269M
- 2800 W Main St, Bozeman, MT$264M
- 1200 Main St, Sturgis, SD$259M
- 222 S Gillette Ave, Gillette, WY$254M
- 24 S Brooks St, Sheridan, WY$235M
- 154 Sw 6th St, Redmond, OR$218M
- 730 Main St, Billings, MT$215M
- 202 W Main St, Bozeman, MT$213M
- 919 Galvin Rd S, Bellevue, NE$197M
- 830 Shiloh Crossing Blvd, Billings, MT$192M
- 2 Main St, Kalispell, MT$191M
- 401 W 19th St, Cheyenne, WY$189M
- 207 W Callender St, Livingston, MT$182M
Locations and branch deposits transcribed from FDIC BankFind Suite active-location records and the annual Summary of Deposits. Verify hours and services with the bank before visiting.