Manufacturers by state1,583 companies

Manufacturers in Illinois

1,583 companies in Illinois are listed in the Noramark directory, most often for CNC machining, finishing and heat treating and welding and fabrication. Browse by process below, or page through the full list.

Listings come from each company’s public information and may be incomplete, so confirm capabilities, materials and certifications with the shop before you commit. The fastest way to get quotes is one request: attach your drawing (PDF or STEP) or describe the part, and Noramark routes it to U.S. shops that fit.

Manufacturing in Illinois

Federal statistics for private manufacturing (NAICS 31-33), 2024 annual averages, next to what the Noramark directory lists. Illinois has about the national share of jobs in manufacturing (1.16x).

Manufacturing jobs

578,389

4.5% of U.S. · 0.0% year over year

Establishments

19,326

BLS QCEW 2024

Average annual pay

$87,924

+3% vs. U.S. manufacturing

In the Noramark directory

1,583

manufacturers listed below

Largest subsectors

  1. Food99,522 jobs · LQ 1.44
  2. Fabricated metal product85,056 jobs · LQ 1.52
  3. Machinery68,867 jobs · LQ 1.60
  4. Transportation equipment48,137 jobs · LQ 0.70
  5. Chemical47,894 jobs · LQ 1.37
  6. Plastics and rubber products43,168 jobs · LQ 1.54

Top counties

  1. Cook County176,781 jobs · LQ 0.84
  2. DuPage County59,322 jobs · LQ 1.16
  3. Lake County52,776 jobs · LQ 1.95
  4. Kane County33,480 jobs · LQ 1.91
  5. Will County23,887 jobs · LQ 1.10
  6. Winnebago County22,458 jobs · LQ 2.16

Top metro areas

  1. Chicago-Naperville-Elgin, IL-IN400,262 jobs · LQ 1.09
  2. Rockford, IL24,528 jobs · LQ 2.16
  3. Davenport-Moline-Rock Island, IA-IL23,707 jobs · LQ 1.62
  4. Peoria, IL23,009 jobs · LQ 1.68
  5. Decatur, IL10,627 jobs · LQ 2.87
  6. Bloomington, IL9,817 jobs · LQ 1.34

Census County Business Patterns counts 12,465 manufacturing establishments with 544,438 employees in Illinois (2023). The two federal counts differ because they define an establishment and its coverage differently.

LQ is the location quotient: the state's share of jobs in the industry divided by the U.S. share. BLS withholds some subsectors, counties and metros to protect confidentiality; those are left out of the lists above. Compare every state.

Sources: U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages; U.S. Census Bureau, 2023 County Business Patterns. Noramark keeps each downloaded file with its checksum and retrieval date.

Processes in Illinois

CNC Machining · 285Finishing & Heat Treating · 223Welding & Fabrication · 119Sheet Metal Fabrication · 100Metal Stamping · 91Injection Molding · 63Laser Cutting · 53Precision Grinding · 53Electronics & Cable Assembly · 44Metal Forming · 43Extrusion · 403D Printing · 39Metal Casting · 35Waterjet Cutting · 24Inspection & Testing · 23

Nearby states

Iowa · 340Indiana · 761Kentucky · 240Missouri · 461Wisconsin · 996