The boundary of adulthood is not the easiest subject for a large population survey. Reaching adulthood is usually associated with crossing a certain age threshold and achieving various event-related, biographical milestones or a certain stage of personal maturity. These are not alternative or competing perspectives, but the ones representing complementary points of view. A survey was conducted between June 30, 2014 and July 1, 2014. It involved 100 localities, 43 federal subjects of the Russian Federation, and 1,500 respondents. This article reviews the findings from the survey. [This article was written by the Public Opinion Foundation and translated by Kenneth Cargill.]