Mahneshan County (Persian: شهرستان ماه‌نشان) is in Zanjan province, Iran.

[3] At the time of the 2006 National Census, the county's population was 41,223 in 9,354 households.

[5] The 2016 census measured the population of the county as 39,425 in 11,935 households.

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

Media related to Mahneshan County at Wikimedia Commons Iran portal