FDIC-insured bank
The First Bank of Greenwich — Cos Cob, CT
Bank headquartered in Cos Cob, Connecticut, part of FIRST GREENWICH FINANCIAL INC.
Source: FDIC BankFind Suite, data as of June 30, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 444 E Putnam Ave Cos Cob, CT 06807 |
| County | Western Connecticut |
| Website | www.greenwichfirst.com |
| Phone | not published in FDIC data, see the bank's website |
FDIC record
| FDIC Certificate | 58307 |
| Federal Reserve RSSD ID | 3466988 |
| Status | Active |
| Charter class | NM (STATE) |
| Holding company | FIRST GREENWICH FINANCIAL INC |
| Domestic offices | 3 |
| Financials as of | June 30, 2026 |
How to find your The First Bank of Greenwich routing number
FDIC does not publish ABA routing numbers, and many banks use different routing numbers by state or by account type. The reliable places to find yours: the bottom left of a check from this bank, the "account details" screen in its online banking, or its official website at www.greenwichfirst.com.
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Offices nearest to headquarters
| The First Bank Of Greenwich main office Cos Cob, CT |
444 E Putnam Ave, 06807 |
| Stamford Branch Stamford, CT |
900 Summer St, 06905 |
| Westchester Branch Port Chester, NY |
500 Westchester Ave, 10573 |
Where The First Bank of Greenwich has offices
Cities with the most The First Bank of Greenwich offices
Largest banks headquartered elsewhere in Connecticut
| Liberty Bank Middletown | $9.38 billion |
| Bankwell Bank New Canaan | $3.47 billion |
| Union Savings Bank Danbury | $3.30 billion |
| Ion Bank Naugatuck | $2.78 billion |
| First County Bank Stamford | $2.42 billion |
| Thomaston Savings Bank Thomaston | $1.93 billion |
| Fairfield County Bank Ridgefield | $1.92 billion |
| Newtown Savings Bank Newtown | $1.87 billion |
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