Manufacturing in St. Clair County, Illinois
This register lists 313 facilities in St. Clair, Illinois. The Bureau of Labor Statistics counted 156 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 156 manufacturing establishments in St. Clair County in 2025, employing about 4,092 people, counting only the industry subsectors the Bureau of Labor Statistics discloses at this level. This registry lists 313.
Facilities8 FACILITIES
Listing 8 of 16: 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 |
|---|---|---|---|---|---|
| Jam Right I Can LLC | O Fallon | Food Manufacturing | 311421 | — | ACTIVE |
| Jam Right I Can LLC | O'fallon | Food Manufacturing | 311421 | — | ACTIVE |
| Signsinsymbols LLC | O Fallon | Printing and Related Support Activities | 323111 | — | ACTIVE |
| East Side Jersey Dairy - O'fallon, Il | O'fallon | Food Manufacturing | 311511 | — | LIKELY ACTIVE |
| Asphalt Sales & Products INC | O'fallon | Petroleum and Coal Products Manufacturing | 324121 | — | UNVERIFIED |
| Prairie Farms Dairy INC. | O Fallon | Food Manufacturing | 311511 | — | UNVERIFIED |
| DKB Partners Inc dba AAA Tool and Machine Co. | O Fallon | Machinery Manufacturing | 333318 | 1–19 | UNVERIFIED |
| O'fallon Pressure Cast INC | O'fallon | Miscellaneous Manufacturing | 339999 | 1–19 | UNVERIFIED |
