Zabol is located near the Lake Hamun and the region is irrigated by the Hirmand River. People of Zabol speak a Persian language variant known as Sistani or Seistani which is very similar to Dari. The tribes of the area include the Shahraki, Arbabi, Barani, Sarani, Fakhireh, Mir, Dahmardeh, rashki, Sanchooli, Pahlevan, Faghiri, Divaneh, Gorg, Nohtani, and Sayyadi. In recent years these tribal names appear in the surnames of the inhabitants of the area. The are also some Baluchis, Pashtuns and Brahuis in the city.