| OROhio River Concrete CORP | Marion | Nonmetallic Mineral Product Manufacturing | 327320 | — | ◐ LIKELY ACTIVE |
| RGRogers Group INC - Crittenden CO Asphalt | Marion | Petroleum and Coal Products Manufacturing | 324121 | — | ◐ LIKELY ACTIVE |
| MHMarion Hardwoods INC | Marion | Wood Product Manufacturing | 321113 | — | ◐ LIKELY ACTIVE |
| SESiemens Electromechanical Components Incorporated | Marion | Electrical Equipment, Appliance & Component Manufacturing | 335314 | — | ◇ UNVERIFIED |
| PPPar4 Plastics, Inc. | Marion | Plastics and Rubber Products Manufacturing | 326121 | 100–499 | ◐ LIKELY ACTIVE |
| RTRiley Tool and Machine, Inc. | Marion | Fabricated Metal Product Manufacturing | 332710 | 20–99 | ◐ LIKELY ACTIVE |
| MFMarion Feed Mill INC | Marion | Food Manufacturing | 311119 | — | ◇ UNVERIFIED |
| RGRogers Group INC - Marion Quarry Asphalt Plant | Marion | Petroleum and Coal Products Manufacturing | 324121 | — | ◇ UNVERIFIED |
 Siemens Industry INC | Marion | Computer and Electronic Product Manufacturing | 334290 | — | ◇ UNVERIFIED |
