section_path: Demographics
section_name: Demographics
paragraph_text: Demographics
  
  Iran's population grew rapidly from about 19 million in 1956 to about 85 million by February 2023. However, Iran's fertility rate has dropped dramatically, from 6.5 children born per woman to about 1.7 two decades later, leading to a population growth rate of about 1.39% as of 2018. Due to its young population, studies project that the growth will continue to slow until it stabilises around 105 million by 2050.
  
  Iran hosts one of the largest refugee populations, with almost one million, mostly from Afghanistan and Iraq. According to the Iranian Constitution, the government is required to provide every citizen with access to social security, covering retirement, unemployment, old age, disability, accidents, calamities, health and medical treatment and care services. This is covered by tax revenues and income derived from public contributions.
  
  The country has one of the highest urban growth rates in the world. From 1950 to 2002, the urban proportion of the population increased from 27% to 60%. Iran's population is concentrated in its western half, especially in the north, north-west and west.
  
  Tehran, with a population of around 9.4 million, is Iran's capital and largest city. The country's second most populous city, Mashhad, has a population of around 3.4 million, and is capital of the province of Razavi Khorasan. Isfahan has a population of around 2.2 million and is Iran's third most populous city. It is the capital of Isfahan province and was also the third capital of the Safavid Empire.