RANKING ·
Largest net interest margin improvement in Illinois
53 of 188 credit unions in Illinois that filed for the quarter ended June 30, 2026 are ranked. At least $100 million in total assets and a comparable quarter a year earlier. Institutions with equal values share a rank. Source: NCUA Call Report data.
| Rank | Institution | Headquarters | Net interest margin, change over 12 months | Total assets |
|---|---|---|---|---|
| 1 | Revity Credit Union | Granite City, IL | +107 bps | $527 million |
| 2 | Vicinity Credit Union | Chicago, IL | +79 bps | $204 million |
| 3 | Great Lakes Credit Union | Bannockburn, IL | +64 bps | $1.4 billion |
| 4 | 1st Midamerica Credit Union | Bethalto, IL | +46 bps | $1.0 billion |
| 5 | First Northern Credit Union | Chicago, IL | +38 bps | $333 million |
| 6 | Vibrant Credit Union | Moline, IL | +36 bps | $1.2 billion |
| 7 | Membersalliance Credit Union | Loves Park, IL | +35 bps | $304 million |
| 8 | Partnership Financial Credit Union | Morton Grove, IL | +32 bps | $403 million |
| 9 | Landmark Credit Union | Danville, IL | +30 bps | $119 million |
| 10 | United Community Credit Union | Quincy, IL | +30 bps | $134 million |
| 11 | Gas and Electric Credit Union | Rock Island, IL | +29 bps | $132 million |
| 12 | Rock Valley Credit Union | Loves Park, IL | +28 bps | $174 million |
| 13 | A.A.E.C. Credit Union | Arlington Heigh, IL | +26 bps | $119 million |
| 14 | Illinois State Credit Union | Normal, IL | +25 bps | $249 million |
| 15 | Selfreliance Federal Credit Union | Chicago, IL | +25 bps | $1.2 billion |
| 16 | Catholic & Community Credit Union | Shiloh, IL | +24 bps | $223 million |
| 17 | Alero Financial Credit Union | Elgin, IL | +24 bps | $954 million |
| 18 | Cornerstone Credit Union | Freeport, IL | +23 bps | $177 million |
| 19 | Cooperative Choice Network Credit Union | Peoria, IL | +23 bps | $206 million |
| 20 | Financial Plus Credit Union | Ottawa, IL | +22 bps | $607 million |
| 21 | Commonwealth Credit Union | Bourbonnais, IL | +21 bps | $128 million |
| 22 | Empeople Credit Union | Moline, IL | +13 bps | $2.3 billion |
| 23 | Baxter Credit Union | Vernon Hills, IL | +13 bps | $6.4 billion |
| 24 | Alliant Credit Union | Chicago, IL | +13 bps | $20.0 billion |
| 25 | Abbott Laboratories Credit Union | Gurnee, IL | +12 bps | $1.1 billion |
| 26 | Abri Credit Union | Romeoville, IL | +11 bps | $381 million |
| 27 | Numark Credit Union | Joliet, IL | +10 bps | $932 million |
| 28 | I. H. Mississippi Valley Credit Union | Moline, IL | +10 bps | $2.3 billion |
| 29 | Illinois Educators Credit Union | Springfield, IL | +10 bps | $120 million |
| 30 | Earthmover Credit Union | Aurora, IL | +6 bps | $472 million |
| 31 | Citizens Equity First Credit Union | Peoria, IL | +6 bps | $8.5 billion |
| 32 | National Police Federal Credit Union | Chicago, IL | +5 bps | $621 million |
| 33 | R.I.A. Federal Credit Union | Rock Island, IL | +5 bps | $749 million |
| 34 | Community Trust Credit Union | Gurnee, IL | +4 bps | $336 million |
| 35 | Dupage Credit Union | Naperville, IL | +4 bps | $600 million |
| 36 | Healthcare Associates Credit Union | Lisle, IL | +3 bps | $482 million |
| 37 | Iaa Credit Union | Bloomington, IL | +2 bps | $415 million |
| 38 | Decatur Earthmover Credit Union | Forsyth, IL | 0 bps | $310 million |
| 39 | Siu Credit Union | Carbondale, IL | -2 bps | $591 million |
| 40 | Consumers Credit Union | Lake Forest, IL | -4 bps | $4.6 billion |
| 41 | Scott Credit Union | Edwardsville, IL | -5 bps | $1.9 billion |
| 42 | Central Credit Union of Illinois | Bellwood, IL | -5 bps | $123 million |
| 43 | Heartland Credit Union | Springfield, IL | -8 bps | $574 million |
| 44 | Illinois State Police Federal Credit Union | Springfield, IL | -12 bps | $127 million |
| 45 | Staley Credit Union | Decatur, IL | -12 bps | $228 million |
| 46 | Streator Onized Credit Union | Streator, IL | -12 bps | $423 million |
| 47 | State Farm Federal Credit Union | Bloomington, IL | -13 bps | $5.7 billion |
| 48 | Illiana Financial Credit Union | Calumet City, IL | -14 bps | $264 million |
| 49 | University of Illinois Community Credit Union | Champaign, IL | -15 bps | $765 million |
| 50 | Midwest Members Credit Union | Wood River, IL | -18 bps | $227 million |
| 51 | Land of Lincoln Credit Union | Decatur, IL | -22 bps | $499 million |
| 52 | Members "First" Community Credit Union | Quincy, IL | -30 bps | $112 million |
| 53 | Credit Union 1 | Lombard, IL | -171 bps | $2.9 billion |
Rankings sort one published measure; they are not an overall judgment of any institution. Methodology · All rankings