| # | Institution | Type | Metro | Assets | Efficiency ratio |
|---|---|---|---|---|---|
| 1 | Meriden Postal Employees Federal Credit Union Meriden, CT | Credit Union | — | $350K | 224.66% |
| 2 | St. Vincent's Medical Center Federal Credit Union Bridgeport, CT | Credit Union | — | $21.9M | 130.73% |
| 3 | Kief Protective Mutual Benefit Ass. Credit Union Bloomfield, CT | Credit Union | — | $603K | 129.31% |
| 4 | The New Haven Police And Municipal Federal Credit Union New Haven, CT | Credit Union | — | $5.6M | 120.19% |
| 5 | Fieldpoint Private Bank & Trust Greenwich, CT | Bank | — | $867.1M | 118.98% |
| 6 | Norwalk Hospital Credit Union Norwalk, CT | Credit Union | — | $32.7M | 107.74% |
| 7 | East End Baptist Tabernacle Federal Credit Union Bridgeport, CT | Credit Union | — | $132K | 106.62% |
| 8 | Science Park Federal Credit Union New Haven, CT | Credit Union | — | $3.7M | 100.80% |
| 9 | Sound Federal Credit Union Norwalk, CT | Credit Union | — | $116.1M | 100.40% |
| 10 | Regional Water Authority Employees Credit Union New Haven, CT | Credit Union | — | $5.7M | 99.64% |
| 11 | America's First Network Credit Union East Hartford, CT | Credit Union | — | $105.8M | 97.19% |
| 12 | Unity Financial Credit Union New Haven, CT | Credit Union | — | $65.4M | 95.28% |
| 13 | New Haven Bank New Haven, CT | Bank | — | $200.0M | 94.36% |
| 14 | Ellafi Federal Credit Union Middletown, CT | Credit Union | — | $177.8M | 93.54% |
| 15 | Members Credit Union Stamford, CT | Credit Union | — | $43.9M | 92.61% |
| 16 | General Electric Employees Federal Credit Union Milford, CT | Credit Union | — | $288.0M | 92.05% |
| 17 | Greater Waterbury Healthcare Federal Credit Union Waterbury, CT | Credit Union | — | $9.4M | 92.00% |
| 18 | Connecticut Community Bank, National Association Norwalk, CT | Bank | — | $526.0M | 91.79% |
| 19 | Pitney Bowes Employees Federal Credit Union Shelton, CT | Credit Union | — | $58.5M | 89.57% |
| 20 | Achieve Financial Credit Union Berlin, CT | Credit Union | — | $177.6M | 88.81% |
| 21 | Mutual Security Credit Union Shelton, CT | Credit Union | — | $379.1M | 87.74% |
| 22 | Connex Credit Union North Haven, CT | Credit Union | — | $1.04B | 87.71% |
| 23 | Skyline Financial Federal Credit Union Waterbury, CT | Credit Union | — | $45.9M | 86.65% |
| 24 | Patriot Bank, National Association Stamford, CT | Bank | — | $1.32B | 86.43% |
| 25 | Hartford Federal Credit Union Hartford, CT | Credit Union | — | $156.4M | 86.10% |
| 26 | 360 Federal Credit Union Windsor Locks, CT | Credit Union | — | $324.1M | 85.92% |
| 27 | Riverbank Federal Credit Union Windsor Locks, CT | Credit Union | — | $88.0M | 85.91% |
| 28 | Tobacco Valley Teachers Federal Credit Union Enfield, CT | Credit Union | — | $71.3M | 84.35% |
| 29 | Nutmeg State Financial Credit Union Rocky Hill, CT | Credit Union | — | $885.2M | 84.30% |
| 30 | Stamford Healthcare Credit Union Stamford, CT | Credit Union | — | $23.8M | 83.70% |
| 31 | Connecticut Labor Dept Federal Credit Union Wethersfield, CT | Credit Union | — | $14.4M | 82.60% |
| 32 | Essex Bank Essex, CT | Bank | — | $536.6M | 82.46% |
| 33 | Fd Community Federal Credit Union Waterbury, CT | Credit Union | — | $159.9M | 81.29% |
| 34 | Franklin Trust Federal Credit Union Hartford, CT | Credit Union | — | $70.6M | 81.01% |
| 35 | First County Bank Stamford, CT | Bank | — | $2.42B | 80.54% |
| 36 | Enfield Community Federal Credit Union Enfield, CT | Credit Union | — | $45.4M | 80.16% |
| 37 | Membersfirst Ct Federal Credit Union Meriden, CT | Credit Union | — | $107.5M | 79.97% |
| 38 | Northwest Community Bank Winsted, CT | Bank | — | $1.26B | 79.54% |
| 39 | Torrington Municipal And Teachers Federal Credit Union Torrington, CT | Credit Union | — | $91.0M | 79.53% |
| 40 | New Haven Firefighters Credit Union New Haven, CT | Credit Union | — | $6.0M | 79.04% |
| 41 | Manchester Municipal Federal Credit Union Manchester, CT | Credit Union | — | $39.6M | 77.92% |
| 42 | Community Healthcare Credit Union Manchester, CT | Credit Union | — | $18.2M | 77.27% |
| 43 | The Milford Bank Milford, CT | Bank | — | $652.0M | 77.12% |
| 44 | Albright Credit Union Bethel, CT | Credit Union | — | $75.2M | 76.99% |
| 45 | The Torrington Savings Bank Torrington, CT | Bank | — | $1.00B | 76.83% |
| 46 | Northwest Hills Credit Union Torrington, CT | Credit Union | — | $54.8M | 76.75% |
| 47 | Trumbull Credit Union Trumbull, CT | Credit Union | — | $3.0M | 76.54% |
| 48 | New Haven County Credit Union North Haven, CT | Credit Union | — | $35.1M | 76.15% |
| 49 | Jewett City Savings Bank Jewett City, CT | Bank | — | $493.9M | 75.79% |
| 50 | Liberty Bank Middletown, CT | Bank | — | $9.38B | 75.60% |