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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 3.7
Monmouth College is a private, selective, residential liberal arts college, offering majors in the natural sciences, social sciences, arts and humanities, as well as outstanding academic advising, small, seminar-style classes, varied internship and study abroad opportunities, and summer research experiences to thoughtful, intellectually engaged and ambitious students from across the United States and around the world.
Zippia score 3.5
Warren County is a county in the US state of Illinois.
Zippia score 3.7
Community-focused nonprofit established in 1844 with recreational programs & services for all ages.
Zippia score 3.9
Warren Achievement School was founded in 1961, in Monmouth, Illinois, by a group of citizens led by Helen Bersted and Lou Ebersole
Zippia score 3.7
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 4.7
Americold is the global leader in temperature controlled warehousing and logistics to the food industry, offering the most comprehensive warehousing, transportation and logistics solutions in the world.
Zippia score 4.0
SC2 is the answer to your third-party logics needs. Our extensive line of services, integrated systems, and dedication to excellence provides precise and efficient results for our partners…making SC2 the quality leader in supply chain services.
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 | Monmouth College | |
| 2 | Warren County Health Department | |
| 3 | YMCA of Warren County | |
| 4 | Warren Achievement Ctr | |
| 5 | City Ford |