Yazd or Yezd (In Persian: یزد), is the capital of Yazd province, one of the most ancient and historic cities in Iran and a centre of Zoroastrian culture. The city is located some 175 miles southeast of Isfahan, at 31.92° North, 54.37° East. In 2005 it had an estimated population of 433,836 people.http://www.mongabay.com/igapo/2005_world_city_populations/Iran.html In 2006 it had an estimated population of 505,037. http://www.world-gazetteer.com/wg.php?x=1152404802&men=gcis&lng=en&dat=32&geo=-106&srt=npan&col=aohdq&geo=-1929.