With more than one-third of Boston’s population between the ages of 20-34, Boston is home to the highest proportion of young adults out of any major city in America. Recognizing the importance of this demographic, the Mayor launched the ONEin3 Initiative in 2004 to support and empower Boston’s young adult population. ONEin3 serves to engage Boston’s young adults through opportunities to participate in city government and civic affairs, facilitate communication between young adults and the city’s leadership, and connect young adults to city resources, neighborhood networks and each other.