Isfahan (, ), also Romanized as Esfahan historically also rendered in English as Ispahan, Sepahan, Esfahan or Hispahan, is the capital of Isfahan Province in Iran, located about south of Tehran. At the 2011 census, it had a population of 1,756,126 and its built-up (or metro) 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 third most populous metropolitan area in Iran after Tehran and Mashhad. The counties of Isfahan, Borkhar, Najafabad, Khomeynishahr, Shahinshahr, Mobarakeh, Falavarjan, Tiran o Karvan and Lenjan all constitute the metropolitan city of Isfahan.