Delijan County (Persian: شهرستان دلیجان) is in Markazi province, Iran.

[3] At the time of the 2006 National Census, the county's population was 43,388 in 12,578 households.

[5] The 2016 census measured the population of the county as 51,621 in 16,453 households.

[2] Delijan County's population history and administrative structure over three consecutive censuses are shown in the following table.

Media related to Delijan County at Wikimedia Commons