Nassau County, New York, a core county of the New York-Newark, NY-NJ-CT-PA market, holds $96.3B in deposits across 32 insured institutions and 338 branches. JPMorgan Chase Bank, National Association is the largest deposit holder at 22.8% share. The top three institutions hold 51.8% of deposits, which places the county in the moderately concentrated band. Deposits have grown 7.6% since 2020 while the branch count fell by 66. It produces $100.7B of output, ranking #47 of the 1,523 counties within a CSA or MSA by economic output.
Deposit trend
Branches: 404 in 2020 to 338 in 2025. Institutions: 35 to 32. Top-three share: 47.5% to 51.8%.
Leading institutions by deposits
| Institution | Deposits | Share | 5‑yr |
|---|---|---|---|
| JPMorgan Chase Bank, National Association | $22.0B | 22.8% | +13% |
| Webster Bank, National Association | $16.2B | 16.8% | +467% |
| Citibank, National Association | $11.7B | 12.1% | +15% |
| TD Bank, National Association | $8.7B | 9.1% | +14% |
| Bank of America, National Association | $6.9B | 7.2% | -10% |
| Flagstar Bank, National Association | $6.0B | 6.2% | -66% |
| Flushing Bank | $3.7B | 3.9% | +28% |
| Capital One, National Association | $3.5B | 3.6% | -47% |
| Apple Bank | $2.1B | 2.2% | +6% |
| Dime Community Bank | $1.9B | 1.9% | +7% |
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 New York-Newark market
Nassau County is one of 30 counties that make up the New York-Newark, NY-NJ-CT-PA market, a Combined Statistical Area (ranked #1 of 293 U.S. markets by economic output). It produces 4.7% of the market’s output and holds 3.3% of its deposits.
| Measure | Nassau County | Share of New York-Newark market |
|---|---|---|
| 2024 GDP | $100.7B | 4.7% |
| Deposits | $96.3B | 3.3% |
| Population | 1,398,939 | 6.2% |
View the full New York-Newark market profile →
Recruiting in Nassau 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 Nassau County, on a retained basis.
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