Banks in Lake County, South Dakota
6 active bank branches operated by 6 institutions, per FDIC records.
Active branches
6
Banks present
6
Deposits (2025)
$439M
Closings since 2020
0
2 openings
Largest banks by deposits in Lake County (2025)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| First Bank & Trust | $194M | 44.2% | 1 |
| First Interstate Bank | $74M | 16.9% | 1 |
| Wells Fargo | $63M | 14.3% | 1 |
| BankWest, Inc. | $49M | 11.3% | 1 |
| First PREMIER Bank | $39M | 9% | 1 |
| First National Bank | $19M | 4.3% | 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.