Original: Britannica's estimate of Iran’s ethnic composition (2000) states “Persian 34.9%; Azerbaijani 15.9%; Kurd 13.0%; Luri 7.2%; Gilaki 5.1%; Mazandarani 5.1%; Afghan 2.8%; Arab 2.5%; other 13.5%”.
Simplified: Provinces of Iran accessed March 21, 2007 Sources: Britannica's estimate of Iran’s ethnic composition (2000) states “Persian 34.9%; Azerbaijani 15.9%; Kurd 13.0%; Luri 7.2%; Gilaki 5.1%; Mazandarani 5.1%; Afghan 2.8%; Arab 2.5%; other 13.5%”.