Hirmand County (Persian: شهرستان هیرمند) is a county in Sistan va Baluchestan Province in Iran. The capital of the county is Dust Mohammad. It was separated from Zabol in 2007. At the 2006 census, the county's population was 73,254, in 14,677 families. The county is subdivided into two districts: the Central District and Qorqori District. The county has one city: Dust Mohammad.