Khusf County (Persian: شهرستان خوسف) is in South Khorasan province, Iran.

[3] After establishment of the county, the village of Mohammadiyeh was elevated to city status as Mohammadshahr.

[4] At the time of the 2016 National Census, the county's population was 27,600 in 7,492 households.

[2] Khusf County's population and administrative structure are shown in the following table.

Media related to Khusf County at Wikimedia Commons