Each year, INC. composes a list of the top 500 fastest-growing private companies. The 2009 list can be accessed at the INC website. The methodology for creating the list is as follows:
The Inc. 500|5000 is ranked according to percentage revenue growth from 2005 through 2008. To qualify, companies must have been founded and generating revenue by the first week of 2005, and therefore able to show four full calendar years of sales. Additionally, they have to be U.S.-based, privately held, for profit, and independent — not subsidiaries or divisions of other companies — as of December 31, 2008 (a number of companies on the list have gone public or been acquired since that date). Revenue in 2005 must have been at least $200,000, and revenue in 2008 must have been at least $2 million.
For other rankings of companies, take a look at posts that have been tagged “Company Rankings”.