Population change at every geographic level in the United States and elsewhere is strongly influenced by migration, both domestic and international. Young adults, defined here as those between the ages of 25 and 39, constitute a large share of migrants, perhaps because they are less risk-averse and have a longer time horizon to recoup an “investment” in migration. Their migration choices may be influenced by housing or employment preferences, or simply preferences for a particular set of local amenities. Occasionally, the places they choose may even be those that other migrants are leaving. For these reasons, the migration levels, patterns, and destinations of young people are examined in this report.