Spoken as a native language mostly by ethnic Pashtuns, pashto is one of the two official languages of Afghanistan alongside Dari, and it is the second-largest provincial language of Pakistan, spoken mainly in north-west province of Khyber Pakhtunkhwa and the northern districts of Balochistan.Likewise, it is the primary language of the Pashtun diaspora around the world. The total number of Pashto-speakers is at least 40 million, although some estimates place it as high as 60 million. Pashto is "one of the primary markers of ethnic identity" amongst Pashtuns.