Banks in Sumner County, Kansas
13 active bank branches operated by 10 institutions, per FDIC records.
Active branches
13
Banks present
10
Deposits (2026)
$683M
Closings since 2020
1
0 openings
Largest banks by deposits in Sumner County (2026)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Impact Bank | $153M | 22.4% | 2 |
| Carson Bank | $127M | 18.5% | 1 |
| The Valley State Bank | $90M | 13.1% | 1 |
| The Stock Exchange Bank, Caldwell, Kansas | $61M | 8.9% | 1 |
| The First Security Bank | $59M | 8.7% | 2 |
| Bank of Commerce and Trust Company | $59M | 8.6% | 1 |
| The Security State Bank | $48M | 7% | 1 |
| Vintage Bank Kansas | $45M | 6.6% | 1 |
| RCB Bank | $35M | 5.1% | 2 |
| Bank of Commerce | $8M | 1.2% | 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.