Qarah Bolagh () is a village in Saidabad 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 four in four households. The following census in 2011 counted 56 people in 25 households. The 2016 census measured the population of the village as 45 people in 17 households.