Mahallat County (Persian: شهرستان محلات) is in Markazi province, Iran.

[3] At the time of the 2006 National Census, the county's population was 48,458 in 14,139 households.

[5] The 2016 census measured the population of the county as 55,342 in 18,436 households.

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

Media related to Mahallat County at Wikimedia Commons