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We figured out the best fortune 500 companies to work for in Illinois using data on salaries, company financial health, and employee diversity. You can also search for the best fortune 500 companies to work for in any other state or city.

Zippia score 4.2
Arthur J. Gallagher & Co.
Zippia score 4.7
Northrop Grumman Corporation (NYSE: NOC) is a leading global security company whose 120,000 employees provide innovative systems, products, and solutions in aerospace, electronics, information systems, shipbuilding and technical services to government and commercial customers worldwide.
Zippia score 4.7
Capital One Financial Corporation, incorporated in July 21, 1994, is a diversified banking company focused primarily on consumer and commercial lending and deposit origination. Its principal business segments are Local Banking and National Lending. Local Banking includes consumer, small business and commercial deposits, and lending conducted within its branch network. The National Lending segment consists of three sub-segments: - The U.S. Card sub-segment, which consists of domestic consumer credit and debit card activities; - The Auto Finance sub-segment, which includes automobile and other motor vehicle financing activities, - The Global Financial Services sub-segment consisting of international lending activities, small business lending, installment loans, home loans, healthcare financing and other diversified activities.
Zippia score 4.6
Founded in 1905 with the endorsement of Abraham Lincoln's son, Robert Todd Lincoln, Lincoln Financial Group is the first and only company to carry Abraham Lincoln's name, image and ideals at the heart of their brand. For more than a century, they have advanced President Lincoln's inclusive vision and values by building an honest, dependable financial services company. They are dedicated to helping Americans secure better, more optimistic futures for themselves and their loved ones.
| Rank | Company | Zippia score |
|---|---|---|
| 1 | Gallagher |