RANKING ·
Fastest membership growth in Idaho
20 of 26 credit unions in Idaho that filed for the quarter ended June 30, 2026 are ranked. At least 5,000 members a year earlier; probable mergers left out. Institutions with equal values share a rank. Source: NCUA Call Report data.
| Rank | Institution | Headquarters | Members, change over 12 months | Total assets |
|---|---|---|---|---|
| 1 | Idaho Central Credit Union | Chubbuck, ID | +12.7% | $15.5 billion |
| 2 | Trugrocer Federal Credit Union | Boise, ID | +5.9% | $320 million |
| 3 | Westmark Credit Union | Idaho Falls, ID | +5.3% | $1.7 billion |
| 4 | Frontier Credit Union | Idaho Falls, ID | +5.2% | $822 million |
| 5 | Clarity Credit Union | Nampa, ID | +3.4% | $236 million |
| 6 | Latah Credit Union | Moscow, ID | +3.0% | $170 million |
| 7 | Cottonwood Community Federal Credit Union | Cottonwood, ID | +2.3% | $286 million |
| 8 | Freedom Northwest Credit Union | Kamiah, ID | +2.2% | $693 million |
| 9 | Advantage Plus Federal Credit Union | Pocatello, ID | +2.0% | $292 million |
| 10 | Beehive Federal Credit Union | Rexburg, ID | +1.9% | $648 million |
| 11 | Idaho United Credit Union | Boise, ID | +0.7% | $77.3 million |
| 12 | Potlatch No. 1 Financial Credit Union | Lewiston, ID | +0.1% | $2.2 billion |
| 13 | Lewis Clark Credit Union | Lewiston, ID | -0.8% | $270 million |
| 14 | Lookout Federal Credit Union | Pocatello, ID | -1.7% | $314 million |
| 15 | Northwest Christian Credit Union | Nampa, ID | -1.7% | $106 million |
| 16 | Rails West Federal Credit Union | Pocatello, ID | -2.2% | $80.6 million |
| 17 | Capital Educators Federal Credit Union | Meridian, ID | -2.3% | $1.4 billion |
| 18 | Simplot Credit Union | Pocatello, ID | -2.6% | $59.0 million |
| 19 | Connections Credit Union | Pocatello, ID | -3.2% | $256 million |
| 20 | Pioneer Federal Credit Union | Mountain Home, ID | -3.4% | $744 million |
Rankings sort one published measure; they are not an overall judgment of any institution. Methodology · All rankings