| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Bath Savings Institution | Bank | 1 | $540.9M | 49.70% |
| 2 | The Camden National Bank | Bank | 3 | $162.4M | 14.92% |
| 3 | Atlantic Regional Federal Credit Union | Credit union | 1 | $81.7M* | 7.51% |
| 4 | First Federal Savings and Loan Association of Bath | Bank | 2 | $80.4M | 7.39% |
| 5 | Downeast Credit Union | Credit union | 2 | $74.3M* | 6.83% |
| 6 | Ancorum Credit Union | Credit union | 3 | $66.8M* | 6.13% |
| 7 | Midcoast Federal Credit Union | Credit union | 1 | $47.1M* | 4.33% |
| 8 | Norway Savings Bank | Bank | 1 | $34.6M | 3.18% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $1.09B | 8 | 14 | Bath Savings Institution | 49.7% | 2,917 |
| 2025 | $1.05B | 8 | 14 | Bath Savings Institution | 49.5% | 2,908 |
| 2024 | $1.02B | 8 | 14 | Bath Savings Institution | 48.0% | 2,795 |
| 2023 | $984.3M | 8 | 14 | Bath Savings Institution | 43.4% | 2,446 |
| 2022 | $985.6M | 9 | 16 | Bath Savings Institution | 40.2% | 2,160 |
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