The exact number of girls who own Barbie dolls worldwide is unknown, but we can estimate based on available data.
According to Factoyd, Ninety percent of American girls own at least one Barbie doll, and the average girl owns 10!
While this statistic applies specifically to American girls, it provides a general idea of Barbie's widespread popularity. Unfortunately, without global data on the total number of girls, it is not possible to give an exact figure for how many girls own Barbie dolls worldwide.