| Furst-Mcness Company | Manufacturing | $4,940,200 | $4,997,046 | 349 | $123.2M |  Research |
| Fehr-Graham & Associates LLC | Professional, Scientific, and Technical Services | $2,454,600 | $2,483,578 | 153 | $18.9M | Research |
| Stewart Venture Capital Group Corporation | Administrative and Support and Waste Management | $1,419,000 | $1,432,008 | 250 | $36.6M | Research |
| Loescher Heating and Air Conditioning | Construction | $1,297,500 | $1,305,573 | 56 | $17.7M | Research |
| Loescher Heating and Air Conditioning | Construction | $1,297,500 | $1,304,132 | 55 | $17.4M | Research |
| Stephenson Service Company | Wholesale Trade | $1,269,800 | $1,278,406 | 121 | $31.1M | Research |
| Hughes Services, Inc. | Administrative and Support and Waste Management | $1,217,500 | $1,225,076 | 194 | $30.5M | Research |
| Fischer Excavating Inc. | Construction | $937,703 | $945,179 | 59 | $18.3M | Research |
| Fosler Construction Company, Inc. | Construction | $804,100 | $810,153 | 102 | $31.0M | Research |
| Modern Plating Corporation | Manufacturing | $763,711 | $767,890 | 77 | $18.8M | Research |
| Modern Plating Corp. | Manufacturing | $763,711 | $766,574 | 77 | $18.8M | Research |
| Seaga Manufacturing INC | Manufacturing | $745,100 | $753,917 | 63 | $16.5M | Research |
| Omega Foods, INC | Accommodation and Food Services | $711,000 | $717,399 | 200 | $35.5M | Research |
| Startel Corporation | Administrative and Support and Waste Management | $710,100 | $715,485 | 45 | $6.6M | Research |
| Parkview Home of Freeport, Il, Inc. | Health Care and Social Assistance | $617,100 | $620,563 | 84 | N/A | Research |
| Bocker Chevrolet, Buick, Gmc, Cadillac, | Retail Trade | $589,400 | $593,002 | 64 | $16.1M | Research |
| Kim Foods INC | Accommodation and Food Services | $554,500 | $559,491 | 145 | $25.7M | Research |
| Kels Foods INC | Accommodation and Food Services | $534,000 | $538,702 | 112 | $19.9M | Research |
| K&k Foods INC | Accommodation and Food Services | $467,000 | $471,203 | 144 | $25.6M | Research |
| Freeport Industrial Roofing Inc. | Construction | $462,070 | $464,021 | 24 | $7.9M | Research |
| Freeport Industrial Roofing, Inc. | Construction | $462,000 | $464,515 | 24 | $7.9M | Research |
| Quality Transport Company | Transportation and Warehousing | $452,000 | $455,604 | 28 | <$5M | Research |
| Malcolm Eaton Enterprises | Health Care and Social Assistance | $450,000 | $452,975 | 52 | N/A | Research |
| Quality Transport Company | Transportation and Warehousing | $438,000 | $441,780 | 25 | <$5M | Research |
| Preferred Concrete & Excavating, Inc. | Construction | $390,400 | $209,729 | 10 | <$5M | Research |