Banks in Day County, South Dakota
7 active bank branches operated by 4 institutions, per FDIC records.
Active branches
7
Banks present
4
Deposits (2025)
$226M
Closings since 2020
0
0 openings
Largest banks by deposits in Day County (2025)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Dacotah Bank | $138M | 60.9% | 2 |
| CorTrust Bank | $42M | 18.7% | 2 |
| First Savings Bank | $25M | 11% | 2 |
| First Interstate Bank | $21M | 9.4% | 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.