Middlesex County, Massachusetts, a core county of the Boston-Worcester-Providence, MA-RI-NH market, holds $83.8B in deposits across 47 insured institutions and 446 branches. Bank of America, National Association is the largest deposit holder at 20.0% share. The top three institutions hold 37.1% of deposits, which places the county in the fragmented band. Deposits have grown 11.7% since 2020 while the branch count fell by 51. It produces $204.1B of output, ranking #12 of the 1,523 counties within a CSA or MSA by economic output.
Ranks show where the county stands among the 1,523 ranked counties (those within a Combined or Metropolitan Statistical Area that have a branch). They describe relative position, not a rating of market quality or suitability.
Deposit trend
Branches: 497 in 2020 to 446 in 2025. Institutions: 51 to 47. Top-three share: 42.3% to 37.1%.
Leading institutions by deposits
| Institution | Deposits | Share | 5‑yr |
|---|---|---|---|
| Bank of America | $16.7B | 20.0% | -6% |
| Citizens Bank | $8.7B | 10.3% | -7% |
| TD Bank | $5.7B | 6.8% | +26% |
| Cambridge Savings Bank | $5.4B | 6.4% | +33% |
| Eastern Bank | $4.9B | 5.9% | +129% |
| Leader Bank | $4.0B | 4.8% | +209% |
| Middlesex Savings Bank | $3.9B | 4.6% | +3% |
| Manufacturers and Traders Trust Company | $3.5B | 4.2% | +103% |
| Santander Bank | $3.4B | 4.1% | +9% |
| Northern Bank & Trust Company | $2.7B | 3.2% | +23% |
The 10 largest of 47 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. Deposit figures are nominal and are not adjusted for inflation.
Part of the Boston-Worcester-Providence market
Middlesex 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 28.2% of the market’s output and holds 12.8% of its deposits.
| Measure | Middlesex County | Share of parent market |
|---|---|---|
| 2024 GDP | $204.1B | 28.2% |
| Deposits | $83.8B | 12.8% |
| Population | 1,669,979 | 19.6% |
View the full Boston-Worcester-Providence market profile →
Recruiting in Middlesex County
Deposits are spread across a competitive field of institutions, so the bankers worth recruiting are dispersed across more of them. 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 Middlesex County, on a retained basis.
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