CORNERSTONE
Federal • FAIRFIELD, Connecticut • Est. 1934
Quick Facts
- Charter Number
- #24977
- Type
- Federal
- Established
- 1934
- Headquarters
- FAIRFIELD, Connecticut 06825
- Address
- 1515 BLACK ROCK TPKE
- Branches
- 4
- ATMs
- 3
- Members
- 4,467
- Membership Type
- Other/Unknown
NCUA Financial Health Score
Based on NCUA Q4 2025 Call Report data
Exceptionally well-capitalized with outstanding net worth ratio, very low delinquency, and strong earnings. One of the most financially sound credit unions in the country.
Financial Overview
Total Assets
Members
4,467 total members
Total Loans
Outstanding loan portfolio
Net Worth Ratio
Financial Details
| Metric | CORNERSTONE |
|---|---|
| Total Assets | $65.7M |
| Members | 4,467 |
| Loans Outstanding | $39.1M |
| Shares & Deposits | $57.5M |
| Net Worth | $6.8M |
| Net Worth Ratio | 10.38% |
| Loan-to-Share Ratio | 67.9% |
| Delinquency Rate | 0.17% |
| Net Income | +$398,283 |
Source: NCUA Q4 2025 Call Report • Cycle date: 12/31/2025
Branch Locations
4 locations · 3 ATMs
Fairfield
Main Office1515 Black Rock Tpke
Fairfield, CT 06825
Stamford
242 Hope St
Stamford, CT 06906-1602
Wallingford
88 S Main St
Wallingford, CT 06492-4202
BETHEL
155 Greenwood Ave Bldg B
Bethel, CT 06801-2595
Who Can Join CORNERSTONE?
Membership Type: Other/Unknown
Membership eligibility for CORNERSTONE may vary. Contact the credit union directly to confirm qualification requirements.
Contact CORNERSTONE directly or visit their website for the most accurate and up-to-date membership eligibility information.
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View Connecticut RankingsFrequently Asked Questions
Yes. CORNERSTONE is federally insured by the National Credit Union Administration (NCUA) up to $250,000 per depositor, per ownership category. This provides the same level of deposit protection as FDIC insurance at a bank.
As of the NCUA Q4 2025 Call Report, CORNERSTONE has 4,467 members and a potential membership field of 453,222 people.
CORNERSTONE's net worth ratio is 10.38% as of Q4 2025. The NCUA classifies a credit union as "well-capitalized" when its net worth ratio is 7% or higher. At 10.4%, CORNERSTONE meets this threshold.
CORNERSTONE operates 4 branch locations and has access to 3 ATMs. The main office is located at 1515 Black Rock Tpke, Fairfield, CT 06825.
CORNERSTONE was established in 1934. It is a federal credit union chartered under charter number 24977. The institution has been serving members for 92 years.
Data sourced from the NCUA Quarterly Call Report (Q4 2025). CUScore is an independent directory and is not affiliated with the NCUA or CORNERSTONE. All financial data is for informational purposes only.