Banks in St. Martin County, Louisiana
14 active bank branches operated by 6 institutions, per FDIC records.
Active branches
14
Banks present
6
Deposits (2026)
$875M
Closings since 2020
2
0 openings
Largest banks by deposits in St. Martin County (2026)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Merchants & Marine Bank | $306M | 35% | 4 |
| Hancock Whitney Bank | $194M | 22.2% | 2 |
| Home Bank | $173M | 19.8% | 3 |
| b1BANK | $93M | 10.6% | 2 |
| Community First Bank | $60M | 6.9% | 2 |
| First Horizon Bank | $48M | 5.5% | 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.