Data on population

o   In November 1986, the government reported that the preliminary count in the fourth national census, which had been conducted during October, showed a total population of 48,181,463

o   According to the preliminary results of the 1986 census, the average population density for the country was twenty-nine persons per square kilometer. In some regions, especially along the Caspian coast and in East Azarbaijan, the average density was significantly higher, while in the more arid regions of the Central Plateau and Baluchestan va Sistan, average population density was ten or fewer persons per square kilometer.