RANKING ·
Lowest efficiency ratio in Wyoming
20 of 24 banks in Wyoming 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: FDIC quarterly financial data.
| Rank | Institution | Headquarters | Efficiency ratio (noninterest expense / revenue) | Total assets |
|---|---|---|---|---|
| 1 | The Bank of Star Valley | Afton, WY | 40.8% | $420 million |
| 2 | The Converse County Bank | Douglas, WY | 42.4% | $1.1 billion |
| 3 | Sundance State Bank | Sundance, WY | 46.3% | $291 million |
| 4 | Pinnacle Bank - Wyoming | Cody, WY | 46.4% | $1.3 billion |
| 5 | Jonah Bank of Wyoming | Casper, WY | 50.0% | $563 million |
| 6 | Platte Valley Bank | Torrington, WY | 50.6% | $809 million |
| 7 | Central Bank and Trust | Lander, WY | 50.6% | $203 million |
| 8 | First National Bank of Gillette | Gillette, WY | 51.3% | $652 million |
| 9 | Bank of Commerce | Rawlins, WY | 56.7% | $216 million |
| 10 | Hilltop National Bank | Casper, WY | 57.4% | $1.1 billion |
| 11 | Rsnb Bank | Rock Springs, WY | 58.1% | $381 million |
| 12 | Wyoming Community Bank | Riverton, WY | 63.1% | $262 million |
| 13 | Big Horn Federal Savings Bank | Greybull, WY | 64.2% | $400 million |
| 14 | State Bank | Green River, WY | 64.6% | $115 million |
| 15 | Buffalo Federal Bank | Buffalo, WY | 65.8% | $203 million |
| 16 | First Federal Bank & Trust | Sheridan, WY | 71.6% | $621 million |
| 17 | First Northern Bank of Wyoming | Buffalo, WY | 75.2% | $983 million |
| 18 | Security State Bank | Basin, WY | 75.6% | $449 million |
| 19 | Uinta Bank | Jackson, WY | 87.8% | $222 million |
| 20 | Rnb State Bank | Rawlins, WY | 102.5% | $296 million |
Rankings sort one published measure; they are not an overall judgment of any institution. Methodology · All rankings