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Agricultural Statistics Districts (ASD) zipped (.zip) ESRI shapefile format for download

The Agricultural Statistics Districts (ASD) for the entire U.S. are available in ESRI shapefile format. An ASD is defined as a contiguous group of counties having relatively similar agricultural characteristics. The ASD's used by NASS usually divide each state into as many as nine Agricultural Statistics Districts to make data comparison easier. Each district is more homogeneous with respect to agriculture than the state as a whole.