| # | Name | Location | Assets | Members | ROA |
|---|---|---|---|---|---|
| 1 | Alliant Credit Union | Chicago, IL | $20.01B | 953,370 | 0.95% |
| 2 | Citizens Equity First Credit Union | Peoria, IL | $8.50B | 423,526 | 1.33% |
| 3 | Baxter Credit Union | Vernon Hills, IL | $6.40B | 372,377 | 0.72% |
| 4 | State Farm Federal Credit Union | Bloomington, IL | $5.71B | 113,388 | 0.46% |
| 5 | Consumers Credit Union | Lake Forest, IL | $4.64B | 287,338 | 0.75% |
| 6 | Credit Union 1 Credit Union | Lombard, IL | $2.87B | 172,066 | 1.56% |
| 7 | I. H. Mississippi Valley Credit Union | Moline, IL | $2.30B | 149,553 | 1.11% |
| 8 | Empeople Credit Union | Moline, IL | $2.26B | 74,228 | 0.74% |
| 9 | Scott Credit Union | Edwardsville, IL | $1.85B | 131,312 | 1.14% |
| 10 |
| Great Lakes Credit Union |
| Bannockburn, IL |
| $1.43B |
| 100,624 |
| 0.38% |
| 11 | Vibrant Credit Union | Moline, IL | $1.19B | 69,887 | 0.23% |
| 12 | Selfreliance Federal Credit Union | Chicago, IL | $1.19B | 47,153 | 0.68% |
| 13 | Abbott Laboratories Credit Union | Gurnee, IL | $1.14B | 32,983 | 0.95% |
| 14 | 1St Midamerica Credit Union | Bethalto, IL | $1.01B | 64,586 | 1.22% |
| 15 | Alero Financial Credit Union | Elgin, IL | $953.5M | 65,426 | 0.35% |
| 16 | Numark Credit Union | Joliet, IL | $932.2M | 62,044 | 0.62% |
| 17 | University Of Illinois Community Credit Union | Champaign, IL | $765.5M | 65,320 | 1.11% |
| 18 | R.I.A. Federal Credit Union | Rock Island, IL | $749.1M | 46,841 | 0.36% |
| 19 | National Police Federal Credit Union | Chicago, IL | $620.7M | 42,634 | 0.61% |
| 20 | Financial Plus Credit Union | Ottawa, IL | $607.4M | 46,216 | 1.48% |
| 21 | Dupage Credit Union | Naperville, IL | $600.2M | 49,845 | 0.38% |
| 22 | Siu Credit Union | Carbondale, IL | $591.3M | 46,485 | 1.17% |
| 23 | Heartland Credit Union | Springfield, IL | $573.7M | 35,845 | 1.78% |
| 24 | Revity Credit Union | Granite City, IL | $526.5M | 37,037 | 1.30% |
| 25 | Land Of Lincoln Credit Union | Decatur, IL | $498.9M | 35,747 | 0.23% |
| 26 | Healthcare Associates Credit Union | Lisle, IL | $481.6M | 29,473 | 0.45% |
| 27 | Earthmover Credit Union | Aurora, IL | $471.7M | 31,326 | 1.30% |
| 28 | Streator Onized Credit Union | Streator, IL | $423.3M | 38,405 | 1.19% |
| 29 | Iaa Credit Union | Bloomington, IL | $415.0M | 18,281 | 1.07% |
| 30 | Partnership Financial Credit Union | Morton Grove, IL | $402.9M | 14,456 | 1.30% |
| 31 | Abri Credit Union | Romeoville, IL | $380.8M | 27,813 | 0.28% |
| 32 | Community Trust Credit Union | Gurnee, IL | $336.4M | 13,356 | 1.03% |
| 33 | First Northern Credit Union | Chicago, IL | $333.2M | 21,253 | 1.93% |
| 34 | Decatur Earthmover Credit Union | Forsyth, IL | $310.3M | 20,450 | 0.23% |
| 35 | Membersalliance Credit Union | Loves Park, IL | $303.6M | 22,262 | 0.82% |
| 36 | Illiana Financial Credit Union | Calumet City, IL | $264.2M | 20,860 | 0.35% |
| 37 | Illinois State Credit Union | Normal, IL | $248.6M | 18,999 | 0.97% |
| 38 | Staley Credit Union | Decatur, IL | $228.5M | 17,269 | 1.28% |
| 39 | Midwest Members Credit Union | Wood River, IL | $226.6M | 17,463 | 1.66% |
| 40 | Catholic & Community Credit Union | Shiloh, IL | $222.7M | 13,281 | 0.73% |
| 41 | Cooperative Choice Network Credit Union | Peoria, IL | $205.9M | 12,369 | 0.33% |
| 42 | Vicinity Credit Union | Chicago, IL | $203.9M | 17,491 | -0.28% |
| 43 | Cornerstone Credit Union | Freeport, IL | $176.6M | 12,452 | 1.36% |
| 44 | Rock Valley Credit Union | Loves Park, IL | $174.4M | 15,839 | 0.09% |
| 45 | United Community Credit Union | Quincy, IL | $134.1M | 10,467 | 1.05% |
| 46 | Gas And Electric Credit Union | Rock Island, IL | $132.1M | 5,547 | 1.00% |
| 47 | Commonwealth Credit Union | Bourbonnais, IL | $128.1M | 9,731 | 1.36% |
| 48 | Illinois State Police Federal Credit Union | Springfield, IL | $126.9M | 5,997 | 0.73% |
| 49 | Central Credit Union Of Illinois Credit Union | Bellwood, IL | $122.7M | 10,172 | 0.63% |
| 50 | Illinois Educators Credit Union | Springfield, IL | $120.3M | 10,026 | 0.16% |
| 51 | Landmark Credit Union | Danville, IL | $119.1M | 9,455 | 0.23% |
| 52 | A.A.E.C. Credit Union | Arlington Heigh, IL | $118.9M | 4,538 | 0.72% |
| 53 | Members "First" Community Credit Union | Quincy, IL | $111.6M | 7,545 | 1.74% |
| 54 | Chicago Firefighter's Credit Union | Chicago, IL | $92.9M | 6,495 | 1.30% |
| 55 | Taylorville Community Credit Union | Taylorville, IL | $90.8M | 7,413 | 1.50% |
| 56 | The Credit Union For All Credit Union | Bloomington, IL | $89.6M | 8,027 | 0.40% |
| 57 | Metro Federal Credit Union | Arlington Heigh, IL | $80.0M | 3,310 | 1.04% |
| 58 | Select Employees Credit Union | Sterling, IL | $78.6M | 5,876 | 1.55% |
| 59 | Midwest Coalition Of Labor Credit Union | Countryside, IL | $77.1M | 8,676 | 1.57% |
| 60 | Education Personnel Federal Credit Union | Danville, IL | $74.3M | 4,270 | 0.75% |
| 61 | Gale Credit Union | Galesburg, IL | $73.7M | 4,770 | 0.88% |
| 62 | Northwest Community Credit Union | Morton Grove, IL | $66.6M | 2,365 | -0.01% |
| 63 | United Equity Credit Union | Decatur, IL | $66.2M | 5,645 | 1.68% |
| 64 | Moline Municipal Credit Union | Moline, IL | $66.0M | 2,910 | 0.38% |
| 65 | Acme Continental Credit Union | Riverdale, IL | $62.5M | 4,816 | 0.30% |
| 66 | Fieldstone Credit Union | Bradley, IL | $61.7M | 4,843 | 1.13% |
| 67 | New Century Federal Credit Union | Joliet, IL | $60.2M | 4,567 | 0.75% |
| 68 | Access Credit Union | Broadview, IL | $57.9M | 4,804 | 0.32% |
| 69 | Galesburg Burlington Credit Union | Galesburg, IL | $56.8M | 3,664 | 1.77% |
| 70 | Altonized Community Federal Credit Union | Alton, IL | $53.1M | 5,606 | 0.36% |
| 71 | Riverside Community Credit Union | Kankakee, IL | $52.0M | 3,544 | 1.17% |
| 72 | Maroon Financial Credit Union | Chicago, IL | $51.9M | 6,949 | 0.39% |
| 73 | Bloomington Municipal Credit Union | Bloomington, IL | $45.7M | 2,250 | 1.02% |
| 74 | Fox Valley Credit Union | Aurora, IL | $45.5M | 3,417 | -0.02% |
| 75 | Streator Community Credit Union | Streator, IL | $42.3M | 2,402 | 1.40% |
| 76 | Northwest Municipal Federal Credit Union | Des Plaines, IL | $41.4M | 1,774 | 0.90% |
| 77 | Planites Credit Union | Chicago, IL | $39.8M | 3,897 | 0.50% |
| 78 | Blackhawk Area Credit Union | Savanna, IL | $39.1M | 3,791 | 0.62% |
| 79 | Sherwin Williams Emp. Credit Union | South Holland, IL | $37.0M | 2,976 | 0.00% |
| 80 | Illinois Valley Credit Union | Peru, IL | $36.3M | 4,245 | -2.12% |
| 81 | Service Plus Credit Union | Moline, IL | $34.7M | 1,596 | 1.12% |
| 82 | Canals & Trails Credit Union | Lockport, IL | $34.2M | 3,103 | 1.40% |
| 83 | Area Educational Credit Union | Mattoon, IL | $33.7M | 2,325 | 1.34% |
| 84 | Siue Credit Union | Edwardsville, IL | $30.7M | 1,634 | 0.68% |
| 85 | Elca Federal Credit Union | Chicago, IL | $30.1M | 2,389 | 0.30% |
| 86 | River To River Credit Union | Vienna, IL | $29.7M | 2,483 | 2.25% |
| 87 | Kaskaskia Valley Community Credit Union | Centralia, IL | $29.4M | 3,680 | -0.18% |
| 88 | Community Plus Federal Credit Union | Rantoul, IL | $28.1M | 3,565 | 2.02% |
| 89 | Chicago Post Office Employees Credit Union | Chicago, IL | $27.9M | 4,921 | 0.23% |
| 90 | 2 Rivers Area Credit Union | Kankakee, IL | $27.7M | 4,002 | 0.35% |
| 91 | Elite Community Credit Union | Bourbonnais, IL | $26.5M | 2,254 | 0.49% |
| 92 | Aurora Policemen Credit Union | Aurora, IL | $26.3M | 1,613 | 1.38% |
| 93 | Central Illinois Credit Union | Champaign, IL | $26.1M | 3,566 | 1.25% |
| 94 | Western Illinois School Employees Credit Union | Quincy, IL | $24.0M | 1,691 | 0.45% |
| 95 | Tee-Pak Credit Union | Danville, IL | $23.8M | 2,276 | 0.32% |
| 96 | Rockford Municipal Employees Credit Union | Rockford, IL | $23.6M | 2,076 | -0.77% |
| 97 | Advantage One Credit Union | Morrison, IL | $23.5M | 2,382 | 0.63% |
| 98 | Generations Credit Union | Rockford, IL | $22.4M | 2,064 | 0.92% |
| 99 | Chicago Firemans Assoc Credit Union | Chicago, IL | $21.4M | 3,016 | 0.91% |
| 100 | Harvard Community Credit Union | Harvard, IL | $21.1M | 3,291 | -1.06% |