RANKING ·
Lowest efficiency ratio in Connecticut
21 of 64 credit unions in Connecticut that filed for the quarter ended June 30, 2026 are ranked. At least $100 million in total assets and positive revenue. Institutions with equal values share a rank. Source: NCUA Call Report data.
| Rank | Institution | Headquarters | Efficiency ratio (noninterest expense / revenue) | Total assets |
|---|---|---|---|---|
| 1 | Connecticut State Employees Credit Union | Hartford, CT | 39.4% | $2.7 billion |
| 2 | Waterbury Connecticut Teachers Federal Credit Union | Waterbury, CT | 58.2% | $365 million |
| 3 | Sikorsky Financial Credit Union | Stratford, CT | 59.6% | $1.5 billion |
| 4 | Charter Oak Federal Credit Union | Waterford, CT | 60.7% | $1.7 billion |
| 5 | Sound Federal Credit Union | Norwalk, CT | 62.0% | $116 million |
| 6 | United Business & Industry Federal Credit Union | Plainville, CT | 66.3% | $141 million |
| 7 | Membersfirst Ct Federal Credit Union | Meriden, CT | 68.3% | $107 million |
| 8 | Coreplus Federal Credit Union | Norwich, CT | 68.8% | $676 million |
| 9 | Dutch Point Credit Union | Wethersfield, CT | 70.1% | $565 million |
| 10 | American Eagle Financial Credit Union | East Hartford, CT | 75.3% | $2.8 billion |
| 11 | Connex Credit Union | North Haven, CT | 76.6% | $1.1 billion |
| 12 | Fd Community Federal Credit Union | Waterbury, CT | 76.8% | $163 million |
| 13 | Hartford Federal Credit Union | Hartford, CT | 80.7% | $160 million |
| 14 | Nutmeg State Financial Credit Union | Rocky Hill, CT | 81.3% | $916 million |
| 15 | Finex Credit Union | East Hartford, CT | 86.0% | $134 million |
| 16 | 360 Federal Credit Union | Windsor Locks, CT | 86.6% | $324 million |
| 17 | Mutual Security Credit Union | Shelton, CT | 87.2% | $385 million |
| 18 | America'S First Network Credit Union | East Hartford, CT | 89.1% | $105 million |
| 19 | General Electric Employees Federal Credit Union | Milford, CT | 92.0% | $283 million |
| 20 | Achieve Financial Credit Union | Berlin, CT | 92.1% | $176 million |
| 21 | Ellafi Federal Credit Union | Middletown, CT | 93.3% | $178 million |
Rankings sort one published measure; they are not an overall judgment of any institution. Methodology · All rankings