Total Assets
$66.7M
Total Deposits
$58.5M
Branches
4
Established
1934
CORNERSTONE is a credit union headquartered in FAIRFIELD, Connecticut, established in 1934. It holds $66.7M in total assets across 4 branch locations. In our editorial opinion, based on public FDIC/NCUA data, CORNERSTONE earns a TFS Financial Health Grade of B- (75.2/100) — our editorial assessment, not an official rating or financial advice.
TFS Health Grade
75.2 / 100
Good financial health
How we gradeTFS Health Grades are our editorial opinion based on public FDIC/NCUA data — not an official rating, not financial advice.
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Financial data through March 31, 2026. Updated by TFS August 28, 2026. Data sourced from NCUA Call Reports as of 2026-Q1. This data is provided by the federal government and is believed to be accurate, but TheFinanceSection.com cannot guarantee its completeness or timeliness.
Data sourced from CFPB Consumer Complaint Database. This data is provided by the federal government and is believed to be accurate, but TheFinanceSection.com cannot guarantee its completeness or timeliness.
| Branch | Address | City | State | Type |
|---|---|---|---|---|
| FairfieldHQ | 1515 Black Rock Tpke | Fairfield | CT | Full Service |
| BETHEL | 155 Greenwood Ave Bldg B | Bethel | CT | Full Service |
| Stamford | 242 Hope St | Stamford | CT | Full Service |
| Wallingford | 88 S Main St | Wallingford | CT | Full Service |
Data sourced from FDIC BankFind Suite. This data is provided by the federal government and is believed to be accurate, but TheFinanceSection.com cannot guarantee its completeness or timeliness.
Data sourced from FDIC Enforcement Decisions and Orders / NCUA. This data is provided by the federal government and is believed to be accurate, but TheFinanceSection.com cannot guarantee its completeness or timeliness.
TFS Financial Health Grades represent our editorial assessment based on publicly available data and our proprietary methodology. They do not represent financial advice or an official government rating. Data on this page is sourced from federal government databases and is believed to be accurate.
Benchmarked against 60 active, federally insured credit unions reporting in the same quarter and holding roughly 0.5×–2× its assets. Same-state and overlapping-market peers are prioritized.
TFS health score
75.2
Net worth ratio
10.50%
Return on assets
1.06%
60+ day delinquency
0.12%
Suggested direct comparisons
Danbury, CT
$3.3B
Complaint percentiles are intentionally withheld while TFS audits CFPB company matching and import coverage. Peer conclusions use complete same-quarter regulatory metrics only.