From Googling 'Wasilla AK'

"According to the census bureau, the definitive source of US population figures, the last census tally, in 2000, revealed a population of 5,469. The bureau's 2007 population estimate, which I cited in my story, had the town at 9,780 residents. The difference between the two figures is huge, approximately 79% growth, but there is no disputing it's a small town, approximately one twentieth the size of Barack Obama's Illinois state senate district."