Business

No.Business NameNumber of EmployeesLine of Business
1 Aon - Alight 3,005 Global human resources; outsourcing and consulting
2 CDW 1,211 Technology products and services
3 Zebra Technologies 984 Marking, tracking, and computer printing technologies
4 HydraForce 765 Hydraulic cartridge valves and control systems
5 Adlai E. Stevenson High School District 125 580 Public Education
6 Quill 400 Office products and supplies
7 Sedgebrook Senior Living 396 Senior living and care retirement community
8 Lincolnshire-Prairie View School District 103 349 Public education
9 Sysmex 302 Medical equipment and devices
10 Amerimark Interactive 249 Mail-order