The United States is home to some of the largest global companies. Of the world’s 50 largest public companies by revenue, 21 are based in the United States, including five of the top 10.

Many of the largest American companies are headquartered in the country’s major economic capitals, including New York, Los Angeles, Detroit, Dallas, Houston, and the D.C. metropolitan area. New York City alone is home to the headquarters of dozens of the world’s largest public companies, the most of any city in the United States. Some companies can be found in somewhat smaller, but still substantial business hubs such as California’s Silicon Valley.

13. Illinois
> Largest company: Walgreens Boots Alliance, Inc. (NasdaqGS: WBA)
> Revenue: $117.4 billion
> Headquarters: Deerfield, IL
> Industry: Retail pharmacy

In 2014, drugstore chain Walgreens and European pharmaceutical wholesale company Alliance Boots merged. The combined company, which is headquartered in Deerfield, is the largest company in Illinois, with nearly $120 billion in annual revenue. Walgreens Boots Alliance is currently waiting for approval from the Federal Trade Commission to purchase Rite Aid, one of its largest competitors.

Still, most states, even those that are less populous and lacking a major city, are home to at least one company with $10 billion or more in sales. In fact, many of the largest companies in the country are based in small states such as Nebraska and Arkansas. Based on company filings and estimates of private company figures, as provided by S&P Capital IQ, these are the largest companies in every state.

Click here to see the largest company in every state.
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