NEW YORK (FORTUNE) - Automatic Data Processing (Research) ranks no. 271 on this year's list of the FORTUNE 500, with $8,499.1 million in revenues, up 9.6% from the previous year. The Roseland, N.J.-based company was ranked no. 277 on the 2005 list. Its 2005 profits were $1,055.4 million, up 12.8% from a year earlier.

This year, FORTUNE 500 companies overall brought in a record $9.1 trillion in revenues and $610 billion in profits. And while the economy as a whole grew 3.5% last year, FORTUNE 500 companies did much better, increasing their revenues by a healthy 15.4%.

Full list: FORTUNE 1000 1. Exxon Mobil 6. ConocoPhillips 2. Wal-Mart 7. GE 3. GM 8. Citigroup 4. Chevron 9. AIG 5. Ford 10. IBM Top companies in your state Top-performing companies • Most profitable • Best investments • Fast growing • Big employers Related stories: • Shakeup at the top • FORTUNE 500 roars ahead • Exxon Mobil: A big target

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The FORTUNE 500 list is an annual ranking of America's largest corporations by revenues. Its companies employ more than 24 million people, about 16% of working Americans.

The top 5 companies on this year's list are: Exxon Mobil (Research), Wal-Mart Stores (Research), General Motors (Research), Chevron (Research), and Ford Motor (Research).

See Automatic Data Processing's FORTUNE 500 details, including financial stats and contact information.

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