I love this map showing the number of farmers markets in 2010 because it illustrates how plant biologists count. The dark green areas have lots of farmers markets- somewhere between 4 and 102!
This map showing the number of farms with direct sales [to the consumer] shows a similar trend as the first one. Places where there are a lot of direct farm sales also have a lot of farmers markets. As with many maps like this I want to know more - how is the population distributed? what about price differences?