FOOD DESERT LOCATOR

The Food Desert Locator provides a spatial overview of low-income neighborhoods with high concentrations of people who are far from a supermarket or large grocery store. This mapping tool will allow users to map food deserts—areas with limited access to affordable and nutritious foods—and view census tract-level statistics on population groups with low access to healthy and affordable food.
RSee http://www.ers.usda.gov/Data/FoodDesert/