| Alton Steel, Inc. | Manufacturing | $5,122,394 | $5,171,934 | 264 | $69.1M |  Research |
| Cope Plastics INC | Wholesale Trade | $4,421,164 | $4,811,794 | 367 | $94.5M | Research |
| Alton Steel INC | Manufacturing | $2,000,000 | $2,013,863 | 256 | $67.0M | Research |
| Scheffel & Company P.c. | Professional, Scientific, and Technical Services | $1,538,923 | $1,557,176 | 133 | $42.3M | Research |
| Stutz Excavating INC | Construction | $1,361,254 | $1,370,391 | 64 | $24.0M | Research |
| Senior Services Plus, INC | Health Care and Social Assistance | $1,320,515 | $1,333,865 | 398 | N/A | Research |
| Rkd Automotive, Inc. | Retail Trade | $823,100 | $830,005 | 59 | $14.9M | Research |
| Hanley Industries, Incorporated | Manufacturing | $782,338 | $791,095 | 70 | $69.4M | Research |
| Hanley Industries, Incorporated | Manufacturing | $782,300 | $788,971 | 70 | $19.5M | Research |
| Roberts Motors, INC | Retail Trade | $737,191 | $743,089 | 51 | $12.9M | Research |
| Quality Buick Gmc Cadillac INC | Retail Trade | $659,210 | $664,282 | 39 | $9.8M | Research |
| Fast Eddies Bon Air Inc. | Accommodation and Food Services | $649,250 | $652,226 | 45 | $5.5M | Research |
| Schwegel Physical Therapy PC | Health Care and Social Assistance | $601,741 | $606,555 | 46 | $12.4M | Research |
| Schwegel Physical Therapy P.c. | Health Care and Social Assistance | $595,703 | $600,832 | 57 | $15.4M | Research |
| Ziemer USA INC | Manufacturing | $575,327 | $578,653 | 26 | $7.3M | Research |
| Alton Rehabilitation and Nursing Center, LLC | Health Care and Social Assistance | $550,807 | $479,950 | 91 | $15.5M | Research |
| Abbott Machine Co | Manufacturing | $536,695 | $539,364 | 39 | $9.5M | Research |
| Ziemer USA INC | Manufacturing | $533,160 | $537,761 | 25 | $7.0M | Research |
| Marquette Catholic High School | Educational Services | $466,410 | $472,460 | 51 | N/A | Research |
| Fast Eddies Bon Air, Inc. | Accommodation and Food Services | $462,500 | $465,262 | 50 | $6.1M | Research |
| Catholic Children's Home, INC | Other Services (except Public Administration) | $461,500 | $464,372 | 57 | N/A | Research |
| Eagle Tubular Products, Inc. | Wholesale Trade | $457,412 | $460,360 | 31 | $9.5M | Research |
| General Waste Services, Inc. | Administrative and Support and Waste Management | $449,800 | $455,358 | 29 | $5.5M | Research |
| Abbott Machine Company, INC | Manufacturing | $448,970 | $452,287 | 34 | $8.3M | Research |
| Eagle Tubular Products INC | Wholesale Trade | $435,326 | $438,579 | 37 | $11.3M | Research |