| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Navy Federal Credit Union | Credit union | 3 | $1.35B* | 13.20% |
| 2 | Charter Oak Federal Credit Union | Credit union | 12 | $1.20B* | 11.74% |
| 3 | Chelsea Groton Bank | Bank | 14 | $1.19B | 11.68% |
| 4 | Liberty Bank | Bank | 9 | $1.03B | 10.11% |
| 5 | Citizens Bank, National Association | Bank | 6 | $844.6M | 8.27% |
| 6 | Bank of America, National Association | Bank | 5 | $826.1M | 8.09% |
| 7 | Dime Bank | Bank | 10 | $794.8M | 7.79% |
| 8 | Manufacturers and Traders Trust Company | Bank | 7 | $680.8M | 6.67% |
| 9 | Beacon Bank and Trust | Bank | 6 | $508.5M | 4.98% |
| 10 | Coreplus Federal Credit Union | Credit union | 10 | $467.5M* | 4.58% |
| 11 more institutions, year-over-year share and branch changes with Pro →$29/mo, cancel any time. | |||||
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $10.21B | 21 | 101 | Navy Federal Credit Union | 13.2% | 860 |
| 2025 | $9.99B | 22 | 101 | Navy Federal Credit Union | 13.2% | 848 |
| 2024 | $6.63B | 14 | 71 | Chelsea Groton Bank | 18.1% | 1,227 |
| 2023 | $4.75B | 11 | 53 | Chelsea Groton Bank | 18.8% | 1,387 |
Every institution above links to its profile — ratios, peer medians and this quarter’s change signals. Pro adds the full table, share movement and CSV export.