EducationMaps 13.9% of US Population [Age 25+] is without a High School Diploma July 9, 2015 Alex 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…The most and least educated U.S. statesWorking Age Population in the U.S.Back to School 2017The Age Structure of the United States