| St. Charles Health Council, Inc. | Public Administration | $1,402,660 | $1,410,297 | 183 | N/A |  Research |
| Glass Machinery and Excavation, Inc. | Construction | $686,166 | $690,016 | 90 | $102.5M | Research |
| Glass Machinery and Excavation, Inc. | Construction | $686,000 | $690,910 | 90 | $102.5M | Research |
| Estes Bros. Const., Inc. | Construction | $461,600 | $465,049 | 42 | $47.9M | Research |
| Litton Family Medicine, PC | Health Care and Social Assistance | $149,700 | $150,922 | 11 | <$5M | Research |
| Marcum Oil Company Inc. | Mining, Quarrying, and Oil and Gas Extraction | $121,400 | $122,052 | 11 | <$5M | Research |
| Triple J Mowing LLC | Administrative and Support and Waste Management | $108,600 | $109,204 | 25 | $5.4M | Research |
| Marcum Oil Company, INC | Retail Trade | $103,900 | $104,583 | 13 | <$5M | Research |
| Triple J Mowing LLC | Administrative and Support and Waste Management | $102,800 | $103,497 | 25 | $5.4M | Research |
| Jonesville Drug Company, Inc. | Retail Trade | $80,900 | $81,246 | 11 | <$5M | Research |
| Rmt Corporation | Retail Trade | $66,600 | $67,197 | 20 | <$5M | Research |
| Lee County Animal Hospital Inc. | Professional, Scientific, and Technical Services | $59,600 | $59,847 | 10 | <$5M | Research |
| Myers Home Center Inc. | Retail Trade | $46,400 | $46,731 | 8 | <$5M | Research |
| Paul D. Harris, CPA | Professional, Scientific, and Technical Services | $43,300 | $43,581 | 3 | <$5M | Research |
| Sidney Kolb Law Office Pllc | Professional, Scientific, and Technical Services | $38,300 | $38,637 | 6 | <$5M | Research |
| Fire & Safety Supply INC | Construction | $33,700 | $34,005 | 7 | <$5M | Research |
| Papa Bear's Market, Inc. | Retail Trade | $32,500 | $32,740 | 11 | <$5M | Research |
| Better Living Home Care, LLC | Health Care and Social Assistance | $30,900 | $31,097 | 14 | <$5M | Research |
| Cumberland Partners LLC | Professional, Scientific, and Technical Services | $29,607 | $29,679 | 5 | <$5M | Research |
| Hines Law Office Plc | Professional, Scientific, and Technical Services | $29,100 | $29,487 | 2 | <$5M | Research |
| Montgomery Law Offices | Professional, Scientific, and Technical Services | $27,900 | $28,103 | 2 | <$5M | Research |
| Hensley Land & Timber Company INC | Agriculture, Forestry, Fishing and Hunting | $26,800 | $27,033 | 6 | <$5M | Research |
| Hensley Land & Timber Company Inc. | Agriculture, Forestry, Fishing and Hunting | $26,800 | $26,893 | 6 | <$5M | Research |
| H. Ronnie Montgomery | Professional, Scientific, and Technical Services | $26,700 | $26,831 | 2 | <$5M | Research |
| Gregory D Edwards | Professional, Scientific, and Technical Services | $26,528 | $26,881 | 2 | <$5M | Research |