Isfahan, historically also rendered in English as Ispahan, Sepahan, Esfahan or Hispahan, is the capital of Isfahan Province in Iran, located about 340 kilometres south of Tehran. At the 2011 census, it had a population of 1,756,126 and its built-up area was home to 2,391,738 inhabitants including Khomeynishahr, Shahinshahr, Khvorasgan, Dorcheh Piaz, Falavarjan, Kelishad Va Sudarjan, Abrisham, Kushk and Kharizsang cities. The Greater Isfahan Region had a population of 3,793,104 in the 2011 Census, the second most populous metropolitan area in Iran after Tehran. The counties of Isfahan, Borkhar, Najafabad, Khomeynishahr, Shahinshahr, Mobarakeh, Falavarjan, Tiran o Karvan, Lenjan and Jay all constitute the metropolitan city of Isfahan.