Hazaras are an ethnic group and a principal component of Afghanistan's population. They are one of the largest ethnic groups in Afghanistan, primarily residing in the Hazaristan (Hazarajat) region in central Afghanistan. Hazaras also form significant minority communities in Pakistan, mainly in Quetta, and in Iran, primarily in Mashhad. They speak Dari and Hazaragi, dialects of Persian. Dari, also known as Dari Persian, is an official language of Afghanistan, alongside Pashto.