Relationship of racial/ethnic and socioeconomic factors to pharmacy access measures in Shelby County, Tennessee. The mapped data were mainly collected in a survey of 90 community pharmacies in 25 of the county’s 33 residential ZIP code areas (areas from which survey data were not obtained are shown in white). Panel A shows the number of community pharmacies per 10,000 residents within each ZIP code area in relation to local minority population representation. Panels B, C, and D show the percentage of surveyed pharmacies in each area that reported offering home medication delivery in relation to household income, employment rate, and personal crime risk score, respectively. The maps were generated using a Web-based application (ArcGIS Online, Esri, Redlands, CA), with the base map layer derived from the ArcGIS Web Map collection (source of original shape file: U.S. Census Bureau).