Banks in Dewey County, South Dakota
3 active bank branches operated by 2 institutions, per FDIC records.
Active branches
3
Banks present
2
Deposits (2026)
$148M
Closings since 2020
1
0 openings
Largest banks by deposits in Dewey County (2026)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Western Dakota Bank | $77M | 52.2% | 2 |
| State Bank of Eagle Butte | $71M | 47.8% | 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.