Machinery manufacturers in Illinois
Illinois has 1,266 machinery establishments employing 61,839 people (Census, 2023), and EPA's ECHO database lists 367 active machinery facilities in the state. By employment it is Illinois's number 3 manufacturing industry, and Illinois ranks number 5 among states for it.
- NAICS subsector
- 333
- Machinery Manufacturing
- Establishments
- 1,266
- Census 2023
- Employees
- 61,839
- Census 2023
- In EPA records
- 367
- With a page here
- 5
- Revised
- November 11, 2026
Machinery factories with a page
| Facility | What it makes (NAICS) | City |
|---|---|---|
| Caterpillar | Construction Machinery Manufacturing | Aurora |
| Caterpillar - East Peoria Plant | Construction Machinery Manufacturing | East Peoria |
| Caterpillar Inc | Construction Machinery Manufacturing | Decatur |
| John Deere Harvester Works | Farm Machinery and Equipment Manufacturing | East Moline |
| Navistar Inc | Other Engine Equipment Manufacturing | Melrose Park |
These are the Illinois machinery facilities that report to EPA's Toxics Release Inventory. The other 362 in EPA records don't have a page yet.
What these factories make
- Construction Machinery Manufacturing (NAICS 333120): 3 facilities
- Mining Machinery and Equipment Manufacturing (NAICS 333131): 1 facility
- Farm Machinery and Equipment Manufacturing (NAICS 333111): 1 facility
- Other Engine Equipment Manufacturing (NAICS 333618): 1 facility
Where they cluster
Cities with the most active machinery facilities in EPA records: Chicago (21), Rockford (16), Peoria (8), Aurora (8), Carol Stream (6).
Machinery manufacturing across the US. Everything made in Illinois.