County banking markets / LA / 22103
St. TammanyLouisiana
FIPS 22103. Branch offices reported to the FDIC Summary of Deposits, June 30 of each survey year, 1994–2025. One of 64 counties in Louisiana’s 2025 survey.
Concentration, 1994–2025
Branch-count HHI squares each institution’s share of the county’s branch offices; deposit HHI squares its share of county deposits. The bands are the 2010 Horizontal Merger Guidelines classification, the dashed line the 1,800 level above which the Federal Reserve reviews a merger centrally. In 2025 this market is unconcentrated on branches (575) and unconcentrated on deposits (1,182).
Source: FDIC Summary of Deposits | DOJ & FTC, Horizontal Merger Guidelines (2010), section 5.3 | Federal Reserve, Competitive Effects of Mergers and Acquisitions FAQs Both indices computed from the SOD branch rows for this county, June 30 of each survey year. Neither is the Fed's screen HHI: no thrift weighting, no exclusion of specialty and internet banks, no central-booking adjustment. Methodology
Branches and institutions
46 branch offices and 16 institutions in 1994; 76 and 27 in 2025. Deposits booked in the county went from $1.06B to $7.73B, nominal.
Source: FDIC Summary of Deposits FDIC Summary of Deposits, June 30 of each survey year, 1994-2025. Methodology
Who holds the deposits, 2025
Every institution with a branch in the county, ranked by deposits booked here. Both shares are shown because they are the two indices above: squaring and summing the deposit column gives the deposit HHI, the branch column the branch-count HHI.
| # | Institution | Deposits | Deposit share | Branches | Branch share |
|---|---|---|---|---|---|
| 1 | Hancock Whitney Bank cert 12441 | $1.76B | 22.82% | 9 | 11.84% |
| 2 | JPMorgan Chase Bank, National Association cert 628 | $1.33B | 17.23% | 6 | 7.89% |
| 3 | Capital One, National Association cert 4297 | $808.9M | 10.47% | 4 | 5.26% |
| 4 | Regions Bank cert 12368 | $726.5M | 9.40% | 4 | 5.26% |
| 5 | Resource Bank cert 34803 | $644.9M | 8.35% | 6 | 7.89% |
| 6 | Gulf Coast Bank and Trust Company cert 32974 | $452.7M | 5.86% | 4 | 5.26% |
| 7 | BankPlus cert 5903 | $326.0M | 4.22% | 2 | 2.63% |
| 8 | Home Bank, National Association cert 28094 | $291.1M | 3.77% | 6 | 7.89% |
| 9 | b1BANK cert 58228 | $225.7M | 2.92% | 1 | 1.32% |
| 10 | First Horizon Bank cert 4977 | $178.2M | 2.31% | 3 | 3.95% |
| 11 | Citizens Bank & Trust Company cert 16417 | $161.4M | 2.09% | 5 | 6.58% |
| 12 | Heritage Bank of St Tammany cert 29577 | $156.9M | 2.03% | 4 | 5.26% |
| 13 | FIDELITY BANK cert 28316 | $128.1M | 1.66% | 3 | 3.95% |
| 14 | Crescent Bank cert 33492 | $105.5M | 1.37% | 1 | 1.32% |
| 15 | American Bank cert 19234 | $74.7M | 0.97% | 2 | 2.63% |
| 16 | Metairie Bank & Trust Company cert 16539 | $67.2M | 0.87% | 2 | 2.63% |
| 17 | Bonvenu Bank, National Association cert 26381 | $42.5M | 0.55% | 1 | 1.32% |
| 18 | Bank of Louisiana cert 17878 | $42.3M | 0.55% | 1 | 1.32% |
| 19 | Investar Bank, National Association cert 58316 | $41.3M | 0.53% | 1 | 1.32% |
| 20 | Citizens Savings Bank cert 30270 | $35.3M | 0.46% | 1 | 1.32% |
| 21 | Renasant Bank cert 12437 | $33.1M | 0.43% | 3 | 3.95% |
| 22 | Fifth District Savings Bank cert 27697 | $30.4M | 0.39% | 1 | 1.32% |
| 23 | Red River Bank cert 34980 | $30.3M | 0.39% | 1 | 1.32% |
| 24 | First American Bank and Trust cert 8149 | $11.4M | 0.15% | 1 | 1.32% |
| 25 | M C Bank & Trust Company cert 17388 | $9.6M | 0.12% | 1 | 1.32% |
| 26 | Mutual Savings and Loan Association cert 27716 | $4.8M | 0.06% | 1 | 1.32% |
| 27 | Woodforest National Bank cert 23220 | $3.6M | 0.05% | 2 | 2.63% |
Source: FDIC Summary of Deposits June 30, 2025. Branch rows grouped by FDIC certificate; names as reported to the survey. Deposit share is n/a where the county's total SOD deposits are zero. Methodology
Back to county banking markets, up to Louisiana, or read the methodology for the two HHI constructions and what they cannot tell you.