Banks in Sully County, South Dakota
2 active bank branches operated by 2 institutions, per FDIC records.
Active branches
2
Banks present
2
Deposits (2025)
$137M
Closings since 2020
0
0 openings
Largest banks by deposits in Sully County (2025)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| BankWest, Inc. | $83M | 60.7% | 1 |
| Sunrise Bank Dakota | $54M | 39.3% | 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.