First-level division
🇮🇷 South Khorasan Province
Subdivisions
Shahrestan-e Birjand
Population 261,324
Shahrestan-e Qa'enat
Population 116,181
Tabas
Population 72,617
Shahrestan-e Darmian
Population 53,714
Shahrestan-e Nehbandan
Population 51,449
Ferdows
Population 45,523
Shahrestan-e Sarbisheh
Population 40,959
Shahrestan-e Zirkuh
Population 40,155
Shahrestan-e Sarayan
Population 33,312
Shahrestan-e Khusf
Population 27,600
Shahrestan-e Boshruyeh
Population 26,064