|Pages in this category should be moved to subcategories where applicable. This category may require frequent maintenance to avoid becoming too large. It should directly contain very few, if any, pages and should mainly contain subcategories.|
Companies based in the U.S. state of Illinois.
This category has the following 21 subcategories, out of 21 total.
- Defunct companies based in Illinois (6 C, 88 P)
- Architecture firms based in Illinois (2 C, 3 P)
- Health care companies based in Illinois (4 C, 26 P)
- Law firms based in Illinois (1 C, 3 P)
- Software companies based in Illinois (1 C, 42 P)
Pages in category "Companies based in Illinois"
The following 24 pages are in this category, out of 24 total. This list may not reflect recent changes.