Plymouth County, Massachusetts, a core county of the Boston-Worcester-Providence, MA-RI-NH market, holds $19.2B in deposits across 18 insured institutions and 132 branches. Rockland Trust Company is the largest deposit holder at 26.9% share. The top three institutions hold 49.4% of deposits, which places the county in the moderately concentrated band. Deposits have grown 23.9% since 2020 while the branch count fell by 16. It produces $28.4B of output, ranking #165 of the 1,523 counties within a CSA or MSA by economic output.
Deposit trend
Branches: 148 in 2020 to 132 in 2025. Institutions: 20 to 18. Top-three share: 48.0% to 49.4%.
Leading institutions by deposits
| Institution | Deposits | Share | 5‑yr |
|---|---|---|---|
| Rockland Trust Company | $5.2B | 26.9% | +34% |
| HarborOne Bank | $2.4B | 12.5% | +27% |
| Hingham Institution for Savings | $1.9B | 9.9% | +13% |
| Eastern Bank | $1.8B | 9.5% | +28% |
| Citizens Bank, National Association | $1.7B | 8.8% | +3% |
| Bank of America, National Association | $1.4B | 7.4% | +29% |
| Santander Bank, N.A. | $1.2B | 6.5% | +15% |
| North Easton Savings Bank | $697M | 3.6% | +53% |
| Bluestone Bank | $652M | 3.4% | +32% |
| Coastal Heritage Bank | $398M | 2.1% | +13% |
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 Boston-Worcester-Providence market
Plymouth County is one of 18 counties that make up the Boston-Worcester-Providence, MA-RI-NH market, a Combined Statistical Area (ranked #6 of 293 U.S. markets by economic output). It produces 3.9% of the market’s output and holds 2.9% of its deposits.
| Measure | Plymouth County | Share of Boston-Worcester-Providence market |
|---|---|---|
| 2024 GDP | $28.4B | 3.9% |
| Deposits | $19.2B | 2.9% |
| Population | 546,829 | 6.4% |
View the full Boston-Worcester-Providence market profile →
Recruiting in Plymouth County
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 Plymouth County, on a retained basis.
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