Manufacturing in St. Clair County, Michigan
The register lists 219 facilities in St. Clair, Michigan. The Bureau of Labor Statistics counted 201 establishments in St. Clair in 2025.
SUMMARIZED FROM THE FEDERAL FIGURES ON THIS PAGE
Map, cities and benchmark
Biggest cities
Federal labor statistics counted at least 201 manufacturing establishments in St. Clair County in 2025, employing about 5,462 people, counting only the industry subsectors the Bureau of Labor Statistics discloses at this level. This registry lists 219.
Facilities24 FACILITIES
Listing 24 of 31: the facilities with a website, a size band or two sources on record. The rest are in site search.
| Facility | City | Industry | NAICS | Employees | Status |
|---|---|---|---|---|---|
| Btm CO LLC | Marysville | Fabricated Metal Product Manufacturing | 332999 | 100–499 | ACTIVE |
| Conformance Coatings and Prototype, INC | Marysville | Plastics and Rubber Products Manufacturing | 326199 | 1–19 | ACTIVE |
| Mueller Impacts Co, INC | Marysville | Primary Metal Manufacturing | 331316 | 20–99 | ACTIVE |
| Paumac Tubing LLC - Plant 1 | Marysville | Fabricated Metal Product Manufacturing | 332996 | 20–99 | LIKELY ACTIVE |
| Heartland Steel Products, LLC | Marysville | Furniture and Related Product Manufacturing | 337215 | 1–19 | LIKELY ACTIVE |
| Zf Axle Drives Marysville | Marysville | Transportation Equipment Manufacturing | 336111 | — | LIKELY ACTIVE |
| Marysville Ethanol, LLC | Marysville | Petroleum and Coal Products Manufacturing | 324110 | — | LIKELY ACTIVE |
| Samvardhana Motherson Reflectic | Marysville | Transportation Equipment Manufacturing | 336390 | — | LIKELY ACTIVE |
| St Clair Packaging INC | Marysville | Plastics and Rubber Products Manufacturing | 326199 | 20–99 | LIKELY ACTIVE |
| S Custom Welds, LLC | Marysville | Fabricated Metal Product Manufacturing | 332313 | — | LIKELY ACTIVE |
| Smr Automotive Systems USA INC | Marysville | Nonmetallic Mineral Product Manufacturing | 327215 | 500+ | LIKELY ACTIVE |
| Wilkie Bros Conveyors INC | Marysville | Machinery Manufacturing | 333922 | 1–19 | UNVERIFIED |
| Marysville Ethanol, LLC | Marysville | Chemical Manufacturing | 325193 | 20–99 | LIKELY ACTIVE |
| Pregis Marysville | Marysville | Plastics and Rubber Products Manufacturing | 326140 | — | LIKELY ACTIVE |
| Ti Fluid Systems | Marysville | Plastics and Rubber Products Manufacturing | 326199 | — | LIKELY ACTIVE |
| Intertape Polymer CORP | Marysville | Paper Manufacturing | 322220 | — | LIKELY ACTIVE |
| Flint Hills Resources Marysville, LLC | Marysville | Chemical Manufacturing | 325211 | — | UNVERIFIED |
| Ti Fluid Systems | Marysville | Transportation Equipment Manufacturing | 336340 | — | UNVERIFIED |
| Industrial Tapes Marysville | Marysville | Paper Manufacturing | 322220 | 100–499 | LIKELY ACTIVE |
| Marysville | Marysville | Paper Manufacturing | 322220 | 100–499 | LIKELY ACTIVE |
| Paumac Tubing LLC - Plant 3 | Marysville | Fabricated Metal Product Manufacturing | 332996 | 1–19 | LIKELY ACTIVE |
| Heartland Steel Prod LLC | Marysville | Primary Metal Manufacturing | 331210 | 100–499 | UNVERIFIED |
| Mgd Technologies INC | Marysville | Machinery Manufacturing | 333511 | 1–19 | UNVERIFIED |
| TP Logos, LLC | Marysville | Printing and Related Support Activities | 323113 | 1–19 | UNVERIFIED |
