Kusahlar () is a village in Ijrud-e Bala Rural District of the Central District in Ijrud County, Zanjan province, Iran.
At the time of the 2006 National Census, the village's population was 634 in 126 households. The following census in 2011 counted 629 people in 155 households. The 2016 census measured the population of the village as 693 people in 187 households.