Shirin Darreh Rural District

Shirin Darreh Rural District is in the Central District of Quchan County, Razavi Khorasan province, Iran. Its capital is the village of Yusef Khan. The previous capital of the rural district was the village of Mezerj, now a city.

Population
At the time of the 2006 National Census, the rural district's population was 15,898 in 3,832 households. There were 14,332 inhabitants in 3,999 households at the following census of 2011. The 2016 census measured the population of the rural district as 15,435 in 4,718 households. The most populous of its 31 villages was Mezerj (now a city), with 3,834 people.