EducationMaps 13.9% of US Population [Age 25+] is without a High School Diploma July 9, 2015 Alex This post may contain affiliate links. As an Amazon Associate, we earn from qualifying purchases. Related Posts:Fatal School Shooting Events Reported WorldwideAmerica's most segregating school district bordersThe Oldest School In Every Country MappedTop Locations in the United States Where College…Back to School 2017Working Age Population in the U.S.The Age Structure of the United StatesU.S. Population under 5 years of age percent change…