Kachab Mahalleh () is a village in Estakhr-e Posht Rural District of Hezarjarib District in Neka County, Mazandaran province, Iran.
At the time of the 2006 National Census, the village's population was 971 in 193 households. The following census in 2011 counted 976 people in 206 households. The 2016 census measured the population of the village as 510 people in 155 households.