| # | Institution | Type | Metro | Assets | Efficiency ratio |
|---|---|---|---|---|---|
| 1 | Mini-Cassia Empl. Credit Union Burley, ID | Credit Union | — | $532K | 96.27% |
| 2 | Sei Federal Credit Union Pocatello, ID | Credit Union | — | $33.7M | 92.27% |
| 3 | Northwest Christian Credit Union Nampa, ID | Credit Union | — | $104.6M | 89.72% |
| 4 | Lewis Clark Credit Union Lewiston, ID | Credit Union | — | $275.3M | 85.18% |
| 5 | Rails West Federal Credit Union Pocatello, ID | Credit Union | — | $78.5M | 84.67% |
| 6 | Snake River Federal Credit Union Twin Falls, ID | Credit Union | — | $11.9M | 81.33% |
| 7 | Connections Credit Union Pocatello, ID | Credit Union | — | $259.4M | 79.34% |
| 8 | Potlatch No. 1 Financial Credit Union Lewiston, ID |
| Credit Union |
| — |
| $2.15B |
| 78.89% |
| 9 | bankcda Coeur D Alene, ID | Bank | Coeur d'Alene, ID | $238.9M | 78.72% |
| 10 | Lookout Federal Credit Union Pocatello, ID | Credit Union | — | $309.2M | 78.22% |
| 11 | Pioneer Federal Credit Union Mountain Home, ID | Credit Union | — | $738.6M | 77.59% |
| 12 | Simplot Credit Union Pocatello, ID | Credit Union | — | $58.8M | 76.29% |
| 13 | Idaho Trust Bank Boise, ID | Bank | Boise City, ID | $255.6M | 75.84% |
| 14 | Ireland Bank Malad City, ID | Bank | — | $355.4M | 72.51% |
| 15 | Boise Fire Department Credit Union Boise, ID | Credit Union | — | $8.7M | 71.87% |
| 16 | St Joe Valley Credit Union St Maries, ID | Credit Union | — | $13.9M | 68.48% |
| 17 | First Federal Savings Bank of Twin Falls Twin Falls, ID | Bank | Twin Falls, ID | $1.42B | 67.77% |
| 18 | Beehive Federal Credit Union Rexburg, ID | Credit Union | — | $642.2M | 66.16% |
| 19 | Idaho Central Credit Union Chubbuck, ID | Credit Union | — | $14.95B | 64.52% |
| 20 | Latah Credit Union Moscow, ID | Credit Union | — | $169.2M | 59.03% |
| 21 | Cottonwood Community Federal Credit Union Cottonwood, ID | Credit Union | — | $280.0M | 57.64% |
| 22 | Northwest Bank Boise, ID | Bank | Boise City, ID | $1.45B | 55.10% |
| 23 | Idaho First Bank Mccall, ID | Bank | — | $1.36B | 52.75% |
| 24 | D. L. Evans Bank Burley, ID | Bank | Burley, ID | $3.70B | 51.48% |
| 25 | Farmers Bank Buhl, ID | Bank | Twin Falls, ID | $678.4M | 45.61% |
| 26 | Twin River Bank Lewiston, ID | Bank | Lewiston, ID-WA | $173.0M | 41.28% |
| 27 | Freedom Northwest Credit Union Kamiah, ID | Credit Union | — | $667.8M | 40.62% |
| 28 | The Bank of Commerce Ammon, ID | Bank | Idaho Falls, ID | $2.34B | 33.37% |