Cities 90% of US population is within 7 miles of a Walgreens an area equal to 19.5% of the total area of the US July 20, 2016 Alex Via maptitude.tumblr.com Related Posts:Continents and countries split into areas of equal…Maps of the Great LakesSimilar sized countries over US States and Canadian…The Distance of States' Capitals From Their Centers…Plastic Surgeon Density by U.S. StateThe Oldest Cities in the U.S. MappedHuman Climate Niche MappedU.S. Population Density Mapped