# OF EMPLOYEES: 4,940

WEBSITE: www.edward.org

Edward-Elmhurst Health is one of the larger integrated health systems in Illinois. The system was created by the merger of Edward Hospital and Elmhurst Memorial Healthcare in 2013.

# OF EMPLOYEES: 3,130

WEBSITE: www.ipsd.org

Indian Prairie School District 204 (abbreviated IPSD) serves roughly 28,500 students from the Illinois communities of Aurora, Bolingbrook, Plainfield and Naperville, in DuPage and Will counties. Currently, one preschool, twenty-one elementary schools, seven middle schools, three high schools, and one alternative high school are in the district. There are thirty-one District 204 schools in Naperville and Aurora and one in Bolingbrook.

# OF EMPLOYEES: 2,531

WEBSITE: www.naperville203.org

Naperville 203 is a nationally recognized school district committed to a mission focused on student success and a passion for life-long learning.

# OF EMPLOYEES: 2,140

WEBSITE: www.nicorgas.com

Nicor Gas is a natural gas distribution company that serves more than 2.2 million customers in a service territory that encompasses most of the northern third of Illinois, excluding the city of Chicago.

# OF EMPLOYEES: 1,300

WEBSITE: www.nalco.com

A trusted partner at more than one million customer locations, Ecolab (ECL) is the global leader in water, hygiene and energy technologies and services that protect people and vital resources.

# OF EMPLOYEES: 1,250

WEBSITE: www.bmoharris.com

Established in 1882 as Harris Bank, and owned by BMO Financial Group (TSX, NYSE: BMO) since 1984, BMO Harris Bank has grown to become one of the largest banks in the Midwest serving personal, commercial and affluent customers.

# OF EMPLOYEES: 1,000

WEBSITE: networks.nokia.com

Nokia is a global leader in creating the technologies at the heart of our connected world.

# OF EMPLOYEES: 965

WEBSITE: www.naperville.il.us

Located 28 miles west of Chicago, Naperville, Ill., consistently ranks as a top community in the nation in which to live, raise children and retire. This vibrant, thriving city is home to acclaimed public and parochial schools, the best public library system in the country, world-class parks, diverse worship options, an array of healthcare options and an exceptionally low crime rate.

# OF EMPLOYEES: 673

WEBSITE: www.kehe.com

With more than 5,500 employee-owners and a 16-distribution center network across North America, they are one of the largest and most respected national fresh, natural & organic and specialty food distributors.

# OF EMPLOYEES: 625

WEBSITE: www.northcentralcollege.edu

North Central College is an independent, comprehensive college of the liberal arts and sciences that offers more than 55 undergraduate majors and graduate programming in five areas.

# OF EMPLOYEES: 600

WEBSITE: www.eby-brown.com

Eby-Brown is the largest privately owned tobacco, candy and convenience distributor in the United States.

# OF EMPLOYEES: 400

WEBSITE: www.wilton.com

Wilton Brands, LLC., (“Wilton”) is a fun and exciting company that is proud to hold the position as a global market leader in the sweet treat making and craft industries.

# OF EMPLOYEES: 280

WEBSITE: www.sikich.com

Sikich LLP is a professional services firm helping middle market companies. Services include accounting, tax, advisory, managed services, ERP and technology.