Source: Iran Statistics Center - Office of Population, Labor Force and Census The information provided is for November. The figures from 2018 are based on the population of 15 years and older. Since 2018 Resolution No. 4, based on paragraph 100/249/p/31 dated 02/17/1398 of the Supreme Youth Council, the age range of youth has changed from 15-29 years to 18-35 years. The statistics of Alborz province are included in Tehran province.