groups Ethnic groups of Afghanistan (percentages are from Encyclopædia Iranica [ 61 ] and CIA World Factbook [ 1 ] )       39.4% to 42% Pashtun       27% to 33.7% Tajik       8.0% to 9% Hazara       8.0% to 9% Uzbek        3.2% to 4% Aimak       3% Turkmen       1.6%