| Darmian County | |
| Native Name: | Persian: شهرستان درمیان |
| Settlement Type: | County |
| Image Map1: | IranSouthKhorasan-SVG.svg |
| Map Caption1: | Location of South Khorasan province in Iran |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | South Khorasan |
| Seat Type: | Capital |
| Seat: | Asadiyeh |
| Parts Type: | Districts |
| Parts Style: | para |
| P1: | Central |
| P2: | Gazik |
| P3: | Miyandasht |
| P4: | Qohestan |
| Population As Of: | 2016 |
| Population Total: | 53714 |
| Coordinates: | 32.9333°N 66°W |
| Coordinates Footnotes: | [1] |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
Darmian County (Persian: شهرستان درمیان) is in South Khorasan province, Iran. Its capital is the city of Asadiyeh.[2]
After the 2006 National Census, the villages of Gazik, Qohestan,[3] and Tabas-e Masina[3] were elevated to city status.
After the 2016 census, Fakhrud Rural District was separated from Qohestan District, and Miyandasht Rural District from the Central District, in the establishment of Miyandasht District. In addition, Nughab Rural District was established in the Central District, and Kushkak Rural District in Qohestan District.[4]
At the time of the 2006 census, the county's population was 51,793 in 12,893 households.[5] The following census in 2011 counted 55,080 people in 14,433 households.[6] The 2016 census measured the population of the county as 53,714 in 14,639 households.[7]
Darmian County's population history and administrative structure over three consecutive censuses are shown in the following table.
| Administrative Divisions | 2006 | 2011 | 2016 | |
|---|---|---|---|---|
| Central District | 21,409 | 23,822 | 23,550 | |
| 7,306 | 7,640 | 8,279 | ||
| Miyandasht RD | 9,791 | 10,378 | 9,811 | |
| Asadiyeh (city) | 4,312 | 5,804 | 5,460 | |
| Gazik District | 15,089 | 15,772 | 15,869 | |
| 6,742 | 4,151 | 4,201 | ||
| 8,347 | 4,554 | 4,778 | ||
| Gazik (city) | 2,934 | 2,294 | ||
| Tabas-e Masina (city) | 4,133 | 4,596 | ||
| Miyandasht District | ||||
| Qohestan District | 15,295 | 15,486 | 14,295 | |
| Fakhrud RD | 5,446 | 5,183 | 4,889 | |
| 9,849 | 7,275 | 7,084 | ||
| Qohestan (city) | 3,028 | 2,322 | ||
| Total | 51,793 | 55,080 | 53,714 | |