Ashtian County (Persian: شهرستان آشتیان) is in Markazi Province, Iran.

[3] At the time of the 2006 National Census, the county's population was 19,011 in 5,669 households.

[5] The 2016 census measured the population of the county as 16,357 in 5,582 households.

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

Media related to Ashtian County at Wikimedia Commons