Credit union Charter Oak
Charter Oak is a federally insured credit union based in Waterford, Connecticut.
- Type
- Credit union
- Charter
- Federally chartered credit union
- Primary regulator
- NCUA
- Established
- January 1, 1939
- Headquarters
- Waterford, CT
- NCUA charter #
- 3413
- Fed RSSD ID
- 595579
Source: U.S. FDIC BankFind & NCUA 5300 Call Report (public data). Data sources · Data as of Q1 2026
Branches by state
Charter Oak operates 15 branch locations in Connecticut. Select a state to drill down to its towns and individual branches.
Ownership
Charter Oak is not currently recorded under a holding company in the federal data — it appears to be independently held. See its structure & merger history for any past changes.
Other credit unions in Connecticut
Federally insured credit unions headquartered in Connecticut, by total assets.
- American Eagle Financial $2.76B
- Connecticut State Employees $2.7B
- Sikorsky Financial $1.44B
- Connex $1.04B
- Nutmeg State Financial $885.2M
- Coreplus $671.3M
- Dutch Point $560M
- Mutual Security $379.1M
Similar-size credit unions
Institutions close to Charter Oak’s $1.7B in assets.
- Keypoint $1.7B
- Greylock $1.71B
- University of Kentucky $1.69B
- Greater Nevada $1.69B
- Merck Employees $1.71B
- Truwest $1.72B