Ojak SarOjak Sar is a village in Babolrud Rural District of the Central District in Babolsar County, Mazandaran province, Iran.DemographicsPopulationAt the time of the 2006 National Census, the village's population was 2,802 in 748 households. The following census in 2011 counted 3,123 people in 947 households. The 2016 census measured the population of the village as 3,511 people in 1,135 households. It was the most populous village in its rural district.