What is the population of Kansas?

According to the July 2008 US Census Bureau report the population of Kansas was 2,802,134.
For PCH - According to Wikipedia, as of 2007, Kansas has an estimated population of 2,775,997, which is an increase of 20180, or 0.7%, from the prior year.
According to the U.S. Census Bureau's website, the 2009 population of Kansas is 2,818,747.