National Obesity Statistics and Facts

Washington State Department of Health Statistics (http://www.doh.wa.gov/cfh/nutritionpa/facts_and_figures/default.htm):

The site also breaks down statistics by county.

The State of Washington's Children report: http://www.hspc.org/publications/pdf/hspc_AR_07_web.pdf (very good report.. also breaks stats down by economic status, ethnicity, etc.)

Healthy Youth Survey Results: https://www.askhys.net/PDF_Output/HYS92_Public516604209999999.PDF