Organic farming has been one of the fastest growing segments of U.S. agriculture for over a decade and all 50 States in the U.S. had some certified organic farmland. This data set surveys organic operations and acreage for crops and livestock (over 40 commodities), at both the national and State levels. Data updated in April 2009 include the number of certified operations by State, for 2000-07.
Source: USDA - ERS, released Wednesday, April 15, 2009
To get more informations see: http://www.ers.usda.gov/Data/Organic/