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We figured out the best biggest companies to work for in Illinois using data on salaries, company financial health, and employee diversity. You can also search for the best biggest companies to work for in any other state or city.

Zippia score 3.8
Elementary and secondary schools furnishing academic courses, ordinarily for kindergarten through grade 12. Included in this industry are parochial schools and military academies furnishing academic courses for kindergarten through grade 12, and secondary schools which furnish both academic and technical courses.
Zippia score 4.0
Garden Center Services has been providing residential, educational, and vocational services to persons with developmental disabilities since 1956.
Zippia score 3.7
Queen of Peace High School was a private, Roman Catholic, college-preparatory high school for girls in Burbank, Illinois, United States.
Zippia score 3.6
Marca Industries Inc is primarily engaged in manufacturing miscellaneous fabricated products, including beauty shop and barber shop equipment; hair work; tobacco pipes and cigarette holders; coin-operated amusement machines; matches; candles; lamp shades; feathers; artificial trees and flowers made from all materials, except glass; dressed and dyed furs; umbrellas, parasols, and canes; and other articles, not elsewhere classified.
Zippia score 4.8
OSF HealthCare is an integrated health care network serving the patients and families of central and northern Illinois and northern Michigan. OSF HealthCare, owned and operated by The Sisters of the Third Order of St. Francis, Peoria, Illinois, includes OSF Healthcare System consisting of eight acute care facilities and two colleges of nursing. It also has a primary care physician network consisting of over 600 primary care, specialist physicians, and advanced practice providers. OSF HealthCare owns OSF Saint Francis, Inc., comprised of health care-related businesses, and OSF Healthcare Foundation, the philanthropic arm of OSF Healthcare System and OSF Home Care Services. OSF HealthCare is a multi-state corporation, operating facilities in Illinois and Michigan, providing state-of-the-art, compassionate care to more than 2.5 million people in the communities they serve.
Zippia score 4.1
Our light industrial and light clerical staffing division is our foundational business and has been the driving force behind our 1200%+ growth rate from 2001 to 2011. This is our flagship division currently representing 85% of our overall business. ...
Zippia score 4.6
Averitt is an award-winning freight transportation and supply chain services provider, specializing in LTL, dry van, international and logistics solutions.
Zippia score 4.5
Use the hashtag #myASF with your purchase photos for a chance to be featured and win gift cards!
Zippia score 4.0
Byline Bank is an American bank based in Chicago. It operates over fifty bank branches in the Chicago metropolitan area. The bank came close to failing in 2013 before obtaining new investment from BXM Holdings. They're not like the other guys. They don't pretend to know Chicago; they're a long-time resident who's been part of the local scene for over 100 years. Their name has changed-most recently from North Community Bank to Byline Bank-but their commitment to you is as strong as ever: To be the bank Chicagoans deserve.
Zippia score 3.9
PeopleShare is a staffing company that recruits talented people and match them with area's top companies. The founders had a vision to be different than any other staffing company. All staffing companies, screen, interview and test their employees, but few provide real value. Our value to our customers - "Provide great people to great companies." It is how we provide great people that makes us different. Our years of experience in both small and larger staffing companies has given us a unique advantage.
Zippia score 4.1
Provides Business Consulting Services (100%).
Zippia score 4.0
Garden Center Services has been providing residential, educational, and vocational services to persons with developmental disabilities since 1956.
Zippia score 4.1
A cutting-edge, scalable solution to Americans' increasing demand for local and sustainable food, BrightFarms is pioneering the future of local, low-impact farming. We build, own, and operate local greenhouse farms that create permanent green-collar jobs and deliver fresh, great-tasting produce to homes across the country. BrightFarms' growing methods - a model for the future of scalable, sustainable local farming - use far less energy, land, and water than conventional agriculture. Fast Company recognizes BrightFarms as “One of the World's 50 Most Innovative Companies” and one of the “Top 10 Most Innovative Companies in Food” in the world.
Zippia score 4.1
OSF HealthCare fulfills, through a service of love and compassion, a mission of caring and peace consistent with the needs of the church and the people served.
| Rank | Company | Zippia score |
|---|---|---|
| 1 | Burbank SD 111 | |
| 2 | Garden Center Services | |
| 3 | Queen of Peace High School | |
| 4 | Marca Industries Inc |