| Adams County Ambulance and EMS | Knapheide Equipment | |
| Adams County Emergency Services & Disaster Agency | Knapheide Manufacturing Company | |
| Adams County Health Department | Kohl Wholesale | |
| ADM Quincy | Lewis Seed Farms | |
| AGCO Recycling LLC. | Manchester Tank & Equipment | |
| Awerkamp Machine Co. | Michelmann Steel Construction Company | |
| BASF Corporation | Mid-States Door & Hardware | |
| BHG Safety Partners, LLC | Northeast Missouri Electric Power Coop | |
| Bleigh Ready Mix | Phibro Animal Health Corporation | |
| Blessing Health System | Premium Waters, Inc. | |
| Brickstreet Data Sytems | Prince Minerals | |
| Cerro Flow Products, Inc. | Quincy Fire Department | |
| Denman Services Inc. | Quincy Park District | |
| DLH Associates, Inc | Quincy Police Department | |
| Doyle Equipment Manufacturing Company | Quincy Recycle | |
| GatesAir | Riverview Manufacturing | |
| Gardner Denver, Inc. | Saf-T Connections (Sid Coe) | |
| Getz Fire Equipment | Servicemaster of Quincy | |
| Goerlich Roofing, Inc. | Timewell Drainage Products | |
| Gully Transportation | Titan Wheel Corp. of Illinois | |
| Heimer Construction Co. Inc. | Tri-Township Fire Department | |
| IMEC | US Army Corps of Engineers Mark Twain Lake | |
| J.M. Huber Corporation – Marblehead Plant | WIS-PAK of Quincy | |
| J.M. Huber Corporation – Quincy Plant | XLFleet | |
| John Wood Community College | Yetter Manufacturing | |