Americans born between 1984 and 1992 are known as ‘Millennials’ because they grew up around the year 2000. A new study has found that, as this age group entered their 30s, most were not living very far from where they lived as children. The study found that 90 percent of them lived less than 800 kilometers from where they grew up. Researchers at the U.S. Census Bureau and Harvard University completed the study. They found that, by the time millennials turn 26, 80 percent had moved less than 160 kilometers from where they grew up. The information in the study came from the most recent 10-year-census, tax information and a survey.