Banks in Big Horn County, Montana
2 active bank branches operated by 2 institutions, per FDIC records.
Active branches
2
Banks present
2
Deposits (2026)
$311M
Closings since 2020
1
0 openings
Largest banks by deposits in Big Horn County (2026)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Little Horn State Bank | $217M | 69.6% | 1 |
| First Interstate Bank | $95M | 30.4% | 1 |
Deposit location reflects the office to which deposits are reported and may not represent the residence of depositors.
Cities and towns
Transcribed from FDIC BankFind Suite active-location records and the annual Summary of Deposits. County assignment follows the FDIC branch record.