Iran is the 18th largest country in the world with a population estimated at 80 million in 2015, which ranks 17th in the world.

Iran is home to many different cultures and religions, and Iran offers freedom to practice and carry these out in their own ways. Moreover, Iran has the fourth largest petroleum reserves and largest natural gas reserves. Iran is one of the oldest civilizations in the world dating back to 3200-2800 BC.

Iran Population History
From 1880 till 1920 the population of Iran remained at 10 million or below. From 1920 on it increased steadily, and the population rate reached 20 million by 1955. Then, according to the statistics, the drastic increase made the population reach 50 million in 1985. After increasing to 60 in 1995, it grew straight up to 70 million in 2005. The population statistics graph shows how dramatically the population had been increasing from year to year, and now the population of Iran is over 78 million.