Kasegar Mahalleh () is a village in Pazevar Rural District of Rudbast District in Babolsar County, Mazandaran province, Iran.
At the time of the 2006 National Census, the village's population was 1,525 in 408 households. The following census in 2011 counted 1,670 people in 506 households. The 2016 census measured the population of the village as 1,527 people in 512 households.