| 1 | Tinker Federal Credit Union | Oklahoma City, OK | $6.12B | 14.72% | 0.71% | 0.63% | 488,459 |
| 2 | Ttcu Federal Credit Union | Tulsa, OK | $2.71B | 13.45% | 1.06% | 1.49% | 147,634 |
| 3 | Communication Federal Credit Union | Oklahoma City, OK | $2.38B | 11.83% | 1.60% | 1.24% | 134,555 |
| 4 | Weokie Federal Credit Union | Oklahoma City, OK | $1.50B | 13.45% | 0.86% | 0.64% | 69,632 |
| 5 | Truity Federal Credit Union | Bartlesville, OK | $1.32B | 8.76% | 0.11% | 0.75% | 76,124 |
| 6 | Westreet Federal Credit Union | Tulsa, OK | $966.8M | 9.55% | 0.07% | 2.77% | 61,218 |
| 7 | Oklahoma's Federal Credit Union | Oklahoma City, OK | $954.5M | 12.63% | 1.10% | 0.25% | 60,077 |
| 8 | Oklahoma Central Credit Union | Tulsa, OK | $760.2M | 13.94% | 0.67% | 0.24% | 43,241 |
| 9 | Fort Sill Federal Credit Union | Fort Sill, OK | $394.2M | 11.57% | 1.61% | 1.12% | 23,088 |
| 10 | Allegiance Federal Credit Union | Oklahoma City, OK | $372.5M | 9.67% | 1.18% | 0.71% | 23,942 |
| 11 | Oklahoma Educators Credit Union | Oklahoma City, OK | $305.2M | 11.26% | 0.66% | 0.51% | 11,106 |
| 12 | Energy One Federal Credit Union | Tulsa, OK | $300.7M | 11.28% | 0.94% | 1.76% | 16,357 |
| 13 | Red Crown Federal Credit Union | Tulsa, OK | $256.7M | 10.73% | 0.19% | 0.41% | 18,433 |
| 14 | Okunity Federal Credit Union | Stillwater, OK | $214.7M | 12.33% | 0.86% | 0.48% | 12,836 |
| 15 | U.S. Employees O.C. Federal Credit Union | Oklahoma City, OK | $213.5M | 16.31% | 0.55% | 0.20% | 15,372 |
| 16 | Oklahoma Federal Credit Union | Oklahoma City, OK | $198.9M | 20.23% | 1.72% | 0.24% | 9,502 |
| 17 | Endurance Federal Credit Union | Duncan, OK | $196.5M | 13.69% | 0.84% | 0.21% | 13,200 |
| 18 | Municipal Employees Credit Union of Oklahoma City | Oklahoma City, OK | $190.5M | 8.79% | 0.55% | 0.17% | 9,442 |
| 19 | Western Sun Federal Credit Union | Broken Arrow, OK | $181.5M | 17.57% | 0.24% | 0.71% | 25,873 |
| 20 | Red River Federal Credit Union | Altus, OK | $168.4M | 12.10% | 1.59% | 0.28% | 9,090 |
| 21 | The Focus Federal Credit Union | Oklahoma City, OK | $163.2M | 8.99% | 0.00% | 0.45% | 12,390 |
| 22 | Green Country Federal Credit Union | Sand Springs, OK | $155.4M | 8.47% | -1.38% | 2.75% | 11,402 |
| 23 | First Family Federal Credit Union | Henryetta, OK | $154.4M | 11.63% | 0.81% | 0.62% | 19,340 |
| 24 | Southwest Oklahoma Federal Credit Union | Lawton, OK | $116.4M | 19.32% | 2.15% | 0.88% | 4,818 |
| 25 | Muskogee Federal Credit Union | Muskogee, OK | $112.0M | 12.75% | 1.79% | 0.58% | 8,184 |
| 26 | Cherokee Strip Credit Union | Ponca City, OK | $106.0M | 9.86% | 0.18% | 0.55% | 9,032 |
| 27 | O.U. Federal Credit Union | Norman, OK | $82.7M | 7.76% | 0.77% | 1.08% | 14,308 |
| 28 | Diamond Federal Credit Union | Tulsa, OK | $65.5M | 15.15% | 0.83% | 2.23% | 7,891 |
| 29 | Fraternal Order of Police Federal Credit Union | Tulsa, OK | $56.7M | 12.39% | 1.05% | 0.50% | 3,292 |
| 30 | Employees Federal Credit Union | Tulsa, OK | $46.8M | 8.54% | 0.59% | 0.98% | 3,397 |
| 31 | Fire Fighters Credit Union | Tulsa, OK | $45.4M | 20.72% | 1.00% | 1.39% | 2,710 |
| 32 | Saint Francis Employees Federal Credit Union | Tulsa, OK | $44.7M | 15.92% | 1.29% | 0.20% | 5,901 |
| 33 | Bison Federal Credit Union | Shawnee, OK | $42.5M | 15.26% | 0.74% | 0.39% | 3,789 |
| 34 | Credit Union One of Oklahoma | Oklahoma City, OK | $39.9M | 14.87% | -0.21% | 1.75% | 3,407 |
| 35 | Comanche County Federal Credit Union | Lawton, OK | $36.4M | 18.78% | 1.52% | — | 3,228 |
| 36 | Ok Federal Credit Union | Bartlesville, OK | $26.4M | 15.85% | 1.74% | 0.60% | 3,557 |
| 37 | Energize Credit Union | Oklahoma City, OK | $25.4M | 13.83% | 0.59% | 0.81% | 2,741 |
| 38 | Department of Public Safety Federal Credit Union | Oklahoma City, OK | $25.3M | 17.12% | -0.70% | 1.36% | 2,396 |
| 39 | Ok Members First Federal Credit Union | Tulsa, OK | $24.4M | 14.87% | 0.31% | 0.72% | 3,263 |
| 40 | Encentus Federal Credit Union | Tulsa, OK | $21.4M | 17.05% | -0.40% | 0.60% | 4,527 |
| 41 | Integris Federal Credit Union | Oklahoma City, OK | $14.4M | 11.50% | 0.05% | — | 1,678 |
| 42 | McAlester Aap Federal Credit Union | McAlester, OK | $12.4M | 38.37% | 1.29% | 4.84% | 1,330 |
| 43 | Correctional Workers Federal Credit Union | El Reno, OK | $10.5M | 17.88% | 0.57% | 0.19% | 1,476 |
| 44 | United Members Federal Credit Union | Tulsa, OK | $10.4M | 18.62% | 0.34% | 0.15% | 1,224 |
| 45 | Arbuckle Federal Credit Union | Ada, OK | $10.3M | 8.37% | -0.12% | 0.38% | 1,035 |
| 46 | Cooperative Employees Credit Union | Anadarko, OK | $10.0M | 10.37% | 0.84% | — | 956 |
| 47 | Teachers Credit Union | Oklahoma City, OK | $6.3M | 31.52% | 0.21% | 0.34% | 1,282 |
| 48 | Growing Oaks Federal Credit Union | Goldsby, OK | $4.1M | 9.54% | 6.34% | 0.80% | 504 |
| 49 | Otoe-Missouria Federal Credit Union | Red Rock, OK | $3.5M | 9.17% | -2.36% | 4.55% | 714 |
| 50 | Velma Federal Credit Union | Velma, OK | $3.1M | 15.16% | 2.56% | 1.55% | 689 |
| 51 | Morning Star Federal Credit Union | Tulsa, OK | $1.1M | 5.78% | 0.48% | 0.59% | 402 |