Kuhsar (Persian: كوهسار is a city in, and the capital of, Chendar District of Savojbolagh County, Alborz province, Iran. At the time of the 2006 N…Kuhsar (Persian: كوهسار is a city in, and the capital of, Chendar District of Savojbolagh County, Alborz province, Iran. At the time of the 2006 National Census, the city's population was 7,757, in 2,075 households, when it was in Tehran province. The 2016 census measured the population of the city as 10,940 in 3,321 households, by which time the county had been separated from the province in the establishment of Alborz province.