As of 2014, the frequency of the surname Popović was highest in Montenegro (1: 68), followed by Serbia (1: 145), Bosnia and Herzegovina (1: 354), Croatia (1: 690), Slovenia (1: 1,485) and Macedonia (1: 2,066) [REF].
The frequency of the surname Popovich was highest in Ukraine (1: 1,530), followed by Moldova (1: 4,735), Belarus (1: 9,762) and Russia (1: 10,762) [REF].