| Mrm Holding Company, INC | Transportation and Warehousing | $4,620,900 | $4,675,085 | 434 | $87.4M |  Research |
| Cancer Care Specialists of Central Illinois, Sc | Health Care and Social Assistance | $3,312,700 | $3,351,091 | 179 | $56.2M | Research |
| Macon Resources, Inc. | Health Care and Social Assistance | $1,885,275 | $1,903,604 | 260 | $42.1M | Research |
| King-Lar Company | Construction | $1,787,800 | $1,809,058 | 76 | $24.0M | Research |
| Christy-Foltz, INC | Construction | $1,689,400 | $1,708,171 | 41 | $46.7M | Research |
| Christy-Foltz INC | Construction | $1,689,370 | $1,698,380 | 41 | $46.7M | Research |
| Tyrolt, Incorporated | Construction | $1,555,800 | $1,564,299 | 75 | $23.2M | Research |
| The Micar Company | Manufacturing | $1,502,000 | $1,513,522 | 92 | $22.5M | Research |
| The Micar Company | Manufacturing | $1,502,000 | $1,321,160 | 92 | $22.5M | Research |
| T/cci Manufacturing LLC | Manufacturing | $1,478,600 | $1,495,029 | 102 | $26.7M | Research |
| Tcr Systems LLC | Manufacturing | $1,379,937 | $1,387,028 | 96 | $23.5M | Research |
| Tcr Systems LLC | Manufacturing | $1,379,900 | $1,391,438 | 95 | $23.2M | Research |
| Heritage Behavioral Health Center, INC | Health Care and Social Assistance | $1,377,500 | $1,390,931 | 201 | N/A | Research |
| Community Health Improvement Center, INC | Health Care and Social Assistance | $1,375,200 | $1,386,993 | 221 | N/A | Research |
| Decatur Foundry Inc. | Manufacturing | $1,363,955 | $1,371,722 | 119 | $31.2M | Research |
| Skeff Distributing Company INC | Wholesale Trade | $1,190,000 | $1,199,950 | 106 | $27.3M | Research |
| Chastain & Associates LLC | Professional, Scientific, and Technical Services | $1,186,200 | $1,193,737 | 68 | $8.4M | Research |
| Prairie Creek Village LLC | Health Care and Social Assistance | $1,117,494 | $1,137,423 | 145 | $24.7M | Research |
| Heavner Beyers & Mihlar LLC | Professional, Scientific, and Technical Services | $1,038,637 | $1,048,591 | 66 | $16.0M | Research |
| Morgan Distributing INC | Wholesale Trade | $1,036,901 | $1,045,743 | 74 | $19.0M | Research |
| The Burdick Plumbing & Heating Company | Construction | $1,019,100 | $1,031,273 | 75 | $23.7M | Research |
| Huston-Patterson Corporation | Manufacturing | $1,018,165 | $1,031,182 | 68 | $67.4M | Research |
| Heavner, Beyers & Mihlar, LLC | Professional, Scientific, and Technical Services | $1,011,500 | $1,021,334 | 82 | $19.9M | Research |
| Fair Havens Senior Living, LLC | Health Care and Social Assistance | $1,006,440 | $1,017,930 | 150 | $25.5M | Research |
| Decatur Industrial Electric, Inc. | Wholesale Trade | $999,000 | $1,006,715 | 72 | $22.1M | Research |