Credit union
Cornerstone Federal Credit Union
Fairfield, Connecticut, Greater Bridgeport Planning Region, CT
$68M in total assets and 4,376 members, the 2,150th largest of 4,298 US credit unions and 28th of 64 headquartered in Connecticut.
- NCUA charter
- 24977
- Charter
- Federal
- Chartered
- 1934
- NCUA insured since
- 1971
- Field of membership
- Community credit unions
- Low-income designation
- Yes
Earlier filings under Cornerstone Community Credit Union (charter 68674), Fairfield County Federal Credit Union (charter 24723), before a charter conversion, are included in the history below.
At a glance
Compared with 31 federally insured credit unions in Connecticut with under $100 million in assets, as of June 30, 2026.
| Measure | This credit union | Percentile | Peer range, middle 90% | Peer median |
|---|---|---|---|---|
| Total assets | $68M | 81% | $35M | |
| Loans | $39M | 87% | $16M | |
| Deposits (shares) | $60M | 81% | $31M | |
| Members | 4,376 | 81% | 2,361 | |
| Return on assets | 1.17% | 61% | 0.93% | |
| Net interest income to assets | 5.04% | 94% | 3.77% | |
| Efficiency ratio | 73.9% | 37% | 75.7% | |
| Net worth ratio | 10.58% | 45% | 11.60% | |
| Loans to shares | 65% | 81% | 42% | |
| Cost of deposits | 0.09% | 6% | 0.83% |
Ratios are annualized from year-to-date figures. Return on assets uses average assets, as NCUA does. Cost of deposits includes dividends on shares.
Growth
Total assets grew 7.9% a year over 10 years but fell 0.1% a year over the last 5, without mergers. Membership fell 5.1% a year over 5 years, to 4,376.
Where they operate
4 branches in 3 counties.
Largest counties by branches
| County | Branches | Share of all branches | Rank |
|---|---|---|---|
| Western Connecticut Planning Region, CT | 2 | 0.8% | 19 of 42 |
| Greater Bridgeport Planning Region, CT | 1 | 1.2% | 14 of 30 |
| South Central Connecticut Planning Region, CT | 1 | 0.6% | 21 of 45 |
Credit unions do not report deposits by branch, so these are branch counts: this credit union's branches against every bank and credit union branch in the county. Rank is among all banks and credit unions with a branch there.
Branches by year
| Year end | Branches | Change |
|---|---|---|
| 2025 | 4 | |
| Jun 2026 | 4 | 0 |
Member-serving offices as listed in NCUA call reports. Changes include branches gained in mergers.
Earnings and credit
Return on assets
Year to date, annualized, with the peer median.
Credit and capital
| This credit union | Peer median | |
|---|---|---|
| Delinquent loans, 60+ days | 0.22% | 0.89% |
| Net worth ratio | 10.58% | 11.60% |
| Loans to shares | 65% | 42% |
Delinquent loans are two or more months past due. Net worth is NCUA's capital measure for credit unions.
Related
Credit unions of similar size in Connecticut
Most branches in Western Connecticut Planning Region, CT
Figures as of June 30, 2026 from the credit union's NCUA call report (Form 5300), NCUA's credit union locator and FFIEC merger records.