| St. Mary Parish & School/catholic Bishop of Chicago | Other Services (except Public Administration) | $588,400 | $595,412 | 75 | N/A |  Research |
| Foster / Premier Inc. | Real Estate and Rental and Leasing | $574,300 | $580,649 | 44 | $6.6M | Research |
| Scott D Glazer MD Sc | Health Care and Social Assistance | $551,800 | $555,568 | 54 | $16.9M | Research |
| Scott D. Glazer M.d. S.c. | Health Care and Social Assistance | $547,753 | $552,820 | 49 | $15.4M | Research |
| Certasun LLC | Construction | $529,255 | $535,882 | 37 | $11.7M | Research |
| John S. Swift Co, Inc. | Manufacturing | $527,115 | $421,879 | 50 | $49.6M | Research |
| Strategic Tax Advisors, Inc. | Professional, Scientific, and Technical Services | $523,500 | $530,743 | 50 | $5.2M | Research |
| St. Mary Parish & School/the Catholic Bishop of Chicago | Other Services (except Public Administration) | $508,752 | $513,783 | 49 | N/A | Research |
| Brandt Box & Paper Co. INC | Wholesale Trade | $500,500 | $506,355 | 31 | $8.0M | Research |
| Brandt Box & Paper Co INC | Wholesale Trade | $500,500 | $506,383 | 31 | $8.0M | Research |
| Iphorgan Limited | Professional, Scientific, and Technical Services | $474,900 | $479,214 | 22 | $5.3M | Research |
| Sanders Court Pediatrics, Ltd | Health Care and Social Assistance | $466,652 | $470,242 | 35 | $11.0M | Research |
| Gps Usa, INC | Professional, Scientific, and Technical Services | $452,250 | $458,458 | 50 | $5.2M | Research |
| American Needle Inc. | Manufacturing | $450,222 | $453,407 | 31 | $10.9M | Research |
| Pragma Edge INC | Professional, Scientific, and Technical Services | $450,000 | $452,695 | 180 | $37.2M | Research |
| Inter-Pacific Inc. | Wholesale Trade | $439,917 | $442,803 | 23 | $7.0M | Research |
| American Needle INC | Manufacturing | $423,328 | $427,155 | 26 | $9.2M | Research |
| Ardell Sales & Consulting, Inc. | Professional, Scientific, and Technical Services | $422,890 | $427,057 | 25 | <$5M | Research |
| Vtekh INC | Professional, Scientific, and Technical Services | $418,260 | $423,258 | 17 | <$5M | Research |
| John S. Swift Company Incorporated | Manufacturing | $416,100 | $420,411 | 50 | $49.6M | Research |
| D&f Vapor Inc. | Unknown | $397,420 | $401,220 | 45 | N/A | Research |
| Vtekh INC | Professional, Scientific, and Technical Services | $390,332 | $393,212 | 14 | <$5M | Research |
| Deerfield Patisserie, LLC | Accommodation and Food Services | $384,535 | $387,782 | 35 | $6.2M | Research |
| Midwest Sealing Products Inc. | Manufacturing | $380,270 | $382,520 | 33 | $9.2M | Research |
| Midwest Sealing Products, Inc. | Manufacturing | $380,200 | $383,273 | 35 | $9.8M | Research |