After the 2006 National Census,Khenejin Rural District was separated fromKomijan County, andFarahan District fromTafresh County, in the establishment of Farahan County, which was divided into two districts of two rural districts each, with Farmahin as its capital and only city at the time.[3] After the 2016 census, the village ofTalkh Ab was elevated to the status of a city.[4]
At the time of the 2011 census, the county's population was 30,042 people in 9,535 households.[6] The 2016 census measured the population of the county as 28,994 in 9,744 households.[2]
^abRahimi, Mohammad Reza (c. 2024) [Approved 11 November 1388].Approval letter of reforms and divisional changes in Markazi province.solh.ir (Report) (in Persian). Ministry of the Interior, Board of Ministers. Proposal 163364/42/4/1. Archived fromthe original on 19 January 2024. Retrieved19 January 2024 – via Iranian Knowledge Authority, Iranian Legal Authority (Civilika).