Some map subjects seem to require two maps: one to show the counts of the subject (e.g. counts of people age 65+ years), and a second map to show the percentage of people in an area that fit that definition (e.g. percent of population age 65+ years). This video shows how to combine a count and a percentage into a single map that reveals urban, suburban and rural patterns. This video is featured in The ArcGIS Book, 2nd edition found online at thearcgisbook.com. See the web map at: http://nation.maps.arcgis.com/home/webmap/viewer.html?webmap=c950ff4b446c466fb79a96889e092b13  and final app at: http://nation.maps.arcgis.com/apps/Minimalist/index.html?appid=1a95fa3da81b448198bc0616179ba508