Qarah Bolagh () is a village in Sardrud-e Olya Rural District of Sardrud District in Razan County, Hamadan province, Iran.
Demographics Population At the time of the 2006 National Census, the village's population was 844 in 167 households. The following census in 2011 counted 1,028 people in 247 households. The 2016 census measured the population of the village as 1,061 people in 298 households.
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