Business

No.Business NameNumber of EmployeesLine of Business
1 Aon - Alight 3,005 Global human resources; outsourcing and consulting
2 CDW 1,179 Technology products and services
3 Zebra Technologies 1,121 Marking, tracking and computer printing technologies
4 Adlai E. Stevenson High School District 125 590 Public Education
5 HydraForce 478 Hydraulic cartridge valves and control systems
6 Quill 450 Office products and supplies
7 Sedgebrook Senior Living 372 Senior living and care retirement community
8 Lincolnshire-Prairie View School District 103 347 Public education
9 Marriott Resort 330 Resort/entertainment
10 Sysmex 310 Medical equipment and devices