Our annual ranking of America's largest corporations

States
State
Rank		 Company Fortune 500 rank City Revenues
($ millions)
1 Express Scripts 96 St. Louis 24,748.9
2 Emerson Electric 117 St. Louis 20,915.0
3 Monsanto 197 St. Louis 11,740.0
4 Ameren 320 St. Louis 7,090.0
5 Reinsurance Group of America 321 Chesterfield 7,066.8
6 Charter Communications 332 St. Louis 6,755.0
7 Peabody Energy 346 St. Louis 6,313.9
8 O'Reilly Automotive 429 Springfield 4,847.1
9 Graybar Electric 470 St. Louis 4,377.9
10 Centene 486 St. Louis 4,248.0
11 H&R Block 493 Kansas City 4,213.4
Issue date: May 3, 2010.
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Rank # of Fortune 500 Companies
California 57
Texas 57
New York 56
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Company 2009 $ (millions)
Exxon Mobil $19,280.0
Microsoft $14,569.0
Wal-Mart Stores $14,335.0
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FAQ and methodology
Included in the survey are U.S. incorporated companies filing financial statements with a government agency. This includes private companies... More
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