The data describes a ranking of the countries with the biggest YouTube audiences worldwide, measured by number of monthly active YouTube users as of the first quarter of 2016. During the measured period, the U.S. were ranked first with over 167 million monthly active YouTube users. Brazil was ranked second with close to 70 million YouTube MAU, followed by Russia with 47.4 million monthly active users. As of February 2017, YouTube was ranked first as the most popular mobile music and video app in the U.S. with a mobile audience reach of 62%.
