US Bank Directory
Banks in Cos Cob, CT
5 FDIC-insured banks operate 5 offices in Cos Cob, Connecticut.
Source: FDIC BankFind, data as of September 5, 2026; hours checked October 10, 2026.
Bank branch map: Cos Cob
Banks sit at the coordinates in their FDIC record; credit union offices at their NCUA address, located with the U.S. Census Bureau Geocoder. Point at a marker for today's hours, tap it for the address, directions and the bank's site.
Short answer: 5 banks and credit unions operate 5 locations in Cos Cob, according to the FDIC. 5 of them have coordinates on record and are on the map. 1 publish opening hours.
Branches: FDIC, NCUA. Streets: loading.
5 locations on the map
Tap a cluster to zoom in
Positions are the regulators' own coordinates, or the Census Geocoder's point for the address, and can sit a few hundred feet from the door. Streets, buildings and parks come from OpenStreetMap through OpenFreeMap, with every street named as you zoom in; if that map cannot load, a simpler map drawn from the Census Bureau's TIGER/Line files takes its place. ATMs will follow with the Overture Maps import.
All banks in Cos Cob
Sorted by number of local branches. Each branch shows where its hours and phone number come from.
Short answer: 5 banks share the most locations in Cos Cob, with 1 each. 5 banks have a single office in the city. Open any bank to see each address, today's hours where the bank publishes them and the phone number.
Chase Bank · 1
Chase has 1 branch in Cos Cob, 64 across Connecticut and 5,176 nationwide. FDIC records list its main office in Columbus, OH and show it operating since 1824. With $4.09 trillion in total assets on June 30, 2026, it ranks No. 1 of 4,232 U.S. banks by total assets. The Cos Cob Banking Center Branch at 371 E Putnam Ave dates to 2012 in FDIC branch records. Its published hours do not list Saturday.
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Cos Cob Banking Center Branch371 E Putnam Ave, 06807
All hours
Mon to Fri 9 am to 5 pm; Sat to Sun not published
Hours: Chase branch locator (All The Places), checked Oct 10, 2026
Citibank Bank · 1
Citibank has 1 branch in Cos Cob, 12 across Connecticut and 667 nationwide. FDIC records list its main office in Sioux Falls, SD and show it operating since 1812. With $1.98 trillion in total assets on June 30, 2026, it ranks No. 3 of 4,232 U.S. banks by total assets. The Cos Cob Branch at 453 E Putnam Ave dates to 1993 in FDIC branch records. It does not publish hours in the sources this page uses; check its site before you go.
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Cos Cob Branch453 E Putnam Ave, 06807
M&T Bank Bank · 1
M&T Bank has 1 branch in Cos Cob, 109 across Connecticut and 960 nationwide. FDIC records list its main office in Buffalo, NY and show it operating since 1856. With $218.79 billion in total assets on June 30, 2026, it ranks No. 21 of 4,232 U.S. banks by total assets. The Cos Cob Branch at 119 E Putnam Ave dates to 2005 in FDIC branch records. It does not publish hours in the sources this page uses; check its site before you go.
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Cos Cob Branch119 E Putnam Ave, 06807
The First Bank of Greenwich Bank · 1
The First Bank of Greenwich has 1 branch in Cos Cob, 2 across Connecticut and 3 nationwide. FDIC records list its main office in Cos Cob, CT and show it operating since 2006. With $812.3 million in total assets on June 30, 2026, it ranks No. 1,244 of 4,232 U.S. banks by total assets. Its main office at 444 E Putnam Ave dates to 2006 in FDIC branch records. It does not publish hours in the sources this page uses; check its site before you go.
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Main Office main office444 E Putnam Ave, 06807
Wilmington Trust Bank · 1
Wilmington Trust has 1 branch in Cos Cob, 4 across Connecticut and 38 nationwide. FDIC records list its main office in Wilmington, DE and show it operating since 1995. With $772.1 million in total assets on June 30, 2026, it ranks No. 1,296 of 4,232 U.S. banks by total assets. The Cos Cob South Branch at 119 E Putnam Ave dates to 2026 in FDIC branch records. It does not publish hours in the sources this page uses; check its site before you go.
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Cos Cob South Branch119 E Putnam Ave, 06807
Banking in Cos Cob: the local picture
Short answer: 5 banks run 5 branches in Cos Cob according to the FDIC. A population estimate for this place is not available from the Census Bureau, so branches per resident are not shown.
Of the 5 banks, 1 has its main office in Cos Cob and 4 out of state, according to the FDIC.
The bank with the longest record here is Citibank, operating since 1812 according to the FDIC. In FDIC branch records, the longest-running branch is Citibank's office at 453 E Putnam Ave, dating to 1993; the newest is Wilmington Trust's at 119 E Putnam Ave, from 2026.
Of the 1 location with published hours. None open on Saturday. 4 locations have no published hours in these sources.
Saturday hours in Cos Cob
Short answer: None of the 1 Cos Cob location with published hours lists Saturday hours. 4 locations do not publish hours in these sources; call ahead.
Bank branches show hours only where the bank publishes them in a source this page uses; 4 of the 5 locations here have no published hours yet. The source and date sit under each office. Banks and credit unions often close on Federal Reserve holidays; call ahead.
Chase, Bank of America and other national banks
Which big national banks have branches in Cos Cob, and where the nearest one is if they do not.
Short answer: In Cos Cob: Chase (1). No branches in Cos Cob: Wells Fargo (nearest in Old Greenwich, 2 mi), Bank of America (nearest in Greenwich, 2 mi), PNC Bank, U.S. Bank, Truist, Fifth Third Bank, Huntington, Regions Bank, TD Bank (nearest in Greenwich, 2 mi), BMO.
| Bank | In Cos Cob | Nearest branch if none here |
|---|---|---|
| Chase | 1 branch | here |
| Wells Fargo | None | Old Greenwich, 2 miles away |
| Bank of America | None | Greenwich, 2 miles away |
| PNC Bank | None | none in Connecticut |
| U.S. Bank | None | none in Connecticut |
| Truist | None | none in Connecticut |
| Fifth Third Bank | None | none in Connecticut |
| Huntington | None | none in Connecticut |
| Regions Bank | None | none in Connecticut |
| TD Bank | None | Greenwich, 2 miles away |
| BMO | None | none in Connecticut |
Branch counts from FDIC BankFind as of September 5, 2026. Distances are straight-line miles from the center of Cos Cob to the nearest branch in Connecticut.
What your savings could earn
National benchmarks and the best published offers, from the Banrox Bank Rates tracker. Enter your own balance and rate to compare.
Short answer: At the national average savings rate of 0.38%, $10,000 kept in savings for a year earns about $38. The best published savings rate in the tracker, 3.75% at CIT Bank, earns about $375. The national average 12-month CD pays 1.71%.
| Offer | Bank | APY | Term | Minimum |
|---|---|---|---|---|
| Savings | CIT Bank | 3.75% | none | $5,000 |
| Savings | Barclays | 3.50% | none | $0 |
| Savings | Marcus by Goldman Sachs | 3.40% | none | $0 |
| CD | Synchrony Bank | 4.35% | 60 Months | $0 |
| CD | Marcus by Goldman Sachs | 4.35% | 24 Months | $500 |
| CD | American Express National Bank | 4.25% | 10 Months | $0 |
Rates are the banks' published APYs as tracked on the Banrox Bank Rates page, with the date next to each benchmark; they are not offers from Banrox and can change daily. Interest is before tax. The best offers are mostly online banks and are open to Cos Cob residents like anyone else.
Banks near Cos Cob
Nearby cities with at least two banks, by straight-line distance. Counts from FDIC BankFind.
Short answer: The closest towns with more choice are Riverside (1 mile) and Old Greenwich (2 miles). Stamford, 4 miles away, has the most banks nearby: 18.
| City | Distance | Banks | Branches |
|---|---|---|---|
| Banks in Riverside, CT | 1 mi | 3 | 3 |
| Banks in Old Greenwich, CT | 2 mi | 2 | 2 |
| Banks in Greenwich, CT | 2 mi | 14 | 20 |
| Banks in Stamford, CT | 4 mi | 18 | 40 |
| Banks in Darien, CT | 7 mi | 13 | 15 |
| Banks in New Canaan, CT | 9 mi | 7 | 9 |
| Banks in Norwalk, CT | 11 mi | 18 | 29 |
| Banks in Wilton, CT | 14 mi | 6 | 8 |
Bank branch openings and closings in Cos Cob
FDIC branch records, between September 5, 2025 and September 5, 2026.
Short answer: FDIC branch records show 1 branch opening in Cos Cob between September 5, 2025 and September 5, 2026.
| Date | Change | Bank | Address |
|---|---|---|---|
| May 15, 2026 | Opened | Wilmington Trust | 119 E Putnam Ave, 06807 |
Effective dates as recorded in FDIC BankFind branch history. Closings and relocations are not tracked by the sources this page uses yet. Credit union offices are not included; the NCUA does not publish opening dates.
Banks and credit unions based in Cos Cob
Short answer: 1 institution has its main office in Cos Cob: The First Bank of Greenwich.
| Institution | Type | Total assets, June 30, 2026 | Offices here |
|---|---|---|---|
| The First Bank of Greenwich | Bank | $812.3 million | 1 |
Banks: FDIC BankFind (community-bank flag and assets). Credit unions: NCUA call report.
Largest banks in Cos Cob by total assets
Ranked by each bank's total assets on its FDIC balance sheet, which covers the whole bank, not only its Cos Cob offices.
Short answer: Chase is the largest bank with offices in Cos Cob, with $4.09 trillion in total assets on June 30, 2026, No. 1 among U.S. banks by total assets. Citibank is second with $1.98 trillion. 1 of the 5 bank is headquartered here. Local deposit shares will follow once the FDIC Summary of Deposits is imported.
| Bank | Total assets | Rank | Offices here | Main office |
|---|---|---|---|---|
| Chase | $4.09 trillion | No. 1 | 1 | Columbus, OH |
| Citibank | $1.98 trillion | No. 3 | 1 | Sioux Falls, SD |
| M&T Bank | $218.79 billion | No. 21 | 1 | Buffalo, NY |
| The First Bank of Greenwich | $812.3 million | No. 1,244 | 1 | Cos Cob, CT |
| Wilmington Trust | $772.1 million | No. 1,296 | 1 | Wilmington, DE |
Total assets and ranks from FDIC BankFind as of June 30, 2026. Rank is among active banks that report total assets to the FDIC.
Banks in Cos Cob: FAQ
How many banks are in Cos Cob, CT?
Cos Cob has 5 banks with 5 branches, according to FDIC data as of September 5, 2026.
Which bank has the most branches in Cos Cob?
Chase, with 1. Citibank has 1 and M&T Bank has 1.
Is there a Chase in Cos Cob, CT?
Yes. FDIC data lists 1 Chase branch in Cos Cob as of September 5, 2026. The address and directions are under Chase above.
Is there a Citibank in Cos Cob, CT?
Yes. FDIC data lists 1 Citibank branch in Cos Cob as of September 5, 2026. The address and directions are under Citibank above.
Is there a M&T Bank in Cos Cob, CT?
Yes. FDIC data lists 1 M&T Bank branch in Cos Cob as of September 5, 2026. The address and directions are under M&T Bank above.
Is there a Wells Fargo in Cos Cob, CT?
No. FDIC data lists no Wells Fargo branch in Cos Cob as of September 5, 2026. The nearest is in Old Greenwich, about 2 miles away in a straight line.
Which banks in Cos Cob are open on Saturday?
None of the 1 location with published hours lists Saturday hours. 4 locations do not publish hours in our sources; call ahead.
Which banks are headquartered in Cos Cob?
The First Bank of Greenwich has its main office in Cos Cob, according to the FDIC.
What is the oldest bank in Cos Cob?
Citibank has the longest record among banks with a branch here: the FDIC shows it operating since 1812.
Did any bank branches open or close in Cos Cob in the past year?
FDIC branch records show 1 branch opening between September 5, 2025 and September 5, 2026. Closings and relocations are not tracked by the sources this page uses yet.
Where can I find more banks near Cos Cob?
Nearby cities with more banks include Riverside, Old Greenwich, Greenwich. Riverside is 1 miles away with 3 banks.
How we build this page
Every figure above comes from one of these sources. Nothing is typed by hand, nothing is estimated.
| Data | Source | License | Updated | Data as of |
|---|---|---|---|---|
| FDIC-insured banks: branches, main offices, total assets, dates established | FDIC BankFind Suite API | Public data (U.S. government) | Monthly import | Sep 5, 2026 |
| Bank branch hours, phones and branch pages (1 of 5 branches: Chase) | The banks' own branch locators, collected by All The Places | CC0 (All The Places data); each bank's locator is the primary source | Weekly spider run, monthly refresh here | Oct 10, 2026 |
| Savings and CD rates, national averages | Banrox Bank Rates | Banrox, from the banks' own rate pages and FDIC national rates | Weekly | see each rate |
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