St. Tammany Parish, Louisiana, a core county of the New Orleans-Metairie-Slidell, LA-MS market, holds $7.7B in deposits across 27 insured institutions and 76 branches. Hancock Whitney Bank is the largest deposit holder at 22.8% share. The top three institutions hold 50.5% of deposits, which places the county in the moderately concentrated band. Deposits have grown 12.7% since 2020 while the branch count fell by 7. It produces $13.3B of output, ranking #293 of the 1,523 counties within a CSA or MSA by economic output.
Deposit trend
Branches: 83 in 2020 to 76 in 2025. Institutions: 26 to 27. Top-three share: 53.8% to 50.5%.
Leading institutions by deposits
| Institution | Deposits | Share | 5‑yr |
|---|---|---|---|
| Hancock Whitney Bank | $1.8B | 22.8% | +34% |
| JPMorgan Chase Bank, National Association | $1.3B | 17.2% | +14% |
| Capital One, National Association | $809M | 10.5% | -33% |
| Regions Bank | $727M | 9.4% | -19% |
| Resource Bank | $645M | 8.3% | +4% |
| Gulf Coast Bank and Trust Company | $453M | 5.9% | +55% |
| BankPlus | $326M | 4.2% | +361% |
| Home Bank, National Association | $291M | 3.8% | +37% |
| b1BANK | $226M | 2.9% | +251% |
| First Horizon Bank | $178M | 2.3% | -1% |
The 10 insured institutions with a branch presence in this county, as of June 30, 2025. Five-year change compares the same institution’s county deposits in 2020 and 2025. Institutions are tracked by FDIC certificate number, and where an institution acquired another bank, the acquired bank’s prior deposits are folded into the baseline so the change reflects the combined, continuing franchise rather than reading as new. Even so, a large gain can reflect acquisition rather than organic growth; “no 2020 presence” means neither the institution nor a bank it later absorbed reported deposits in this county that year.
Part of the New Orleans-Metairie-Slidell market
St. Tammany Parish is one of 10 counties that make up the New Orleans-Metairie-Slidell, LA-MS market, a Combined Statistical Area (ranked #44 of 293 U.S. markets by economic output). It produces 15.9% of the market’s output and holds 17.3% of its deposits.
| Measure | St. Tammany Parish | Share of New Orleans-Metairie-Slidell market |
|---|---|---|
| 2024 GDP | $13.3B | 15.9% |
| Deposits | $7.7B | 17.3% |
| Population | 279,108 | 20.6% |
View the full New Orleans-Metairie-Slidell market profile →
Recruiting in St. Tammany Parish
Deposits are split among a moderate number of institutions. Who holds the deposits, and how contested the market is, shapes both the runway for growth and the competition you would be recruiting against. We recruit commercial relationship managers, banking teams, and market leaders for banks building in markets like St. Tammany Parish, on a retained basis.
Start a confidential conversation