The USDA made a neighborhood-level map of &quot;food deserts&quot;-- communities where a significant portion of residents do not have easy access to large grocery stores and healthy food options. <a href="http:&#x2F;&#x2F;www.ers.usda.gov&#x2F;data&#x2F;fooddesert&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.ers.usda.gov&#x2F;data&#x2F;fooddesert&#x2F;</a> It would be interesting to see the two maps layered.