The density of  people in  the urban region of UNESCO World Heritage Site is 3,423/km 2  (8,870/sq mi) . The city UNESCO World Heritage Site province is Razavi Khorasan . The city was incorporated in 1900 . The coordinates of the city are 35°52′N 128°36′E﻿ / ﻿35.867°N 128.600°E . The highest elevation of UNESCO World Heritage Site is 424 m (1,391 ft) . 1,500/km 2  (3,900/sq mi) is the density of people in  the metro region of UNESCO World Heritage Site . The UNESCO World Heritage Site citys' lowest elevation is 865 m  .  The city area code is (+213) 021 . The city water area is 4.12 sq mi (10.67 km 2 ) . UNESCO World Heritage Site is at an elevation of 381 m . The land area of the city is 225.73 sq km  (87.15 sq mi) . UNESCO World Heritage Site has Population: 2,698,077  population . Zhang Guoqing is the mayor of UNESCO World Heritage Site . UNESCO World Heritage Site is located in People's Republic of China . The city has the postal code 090101 to 090158 . The area of the urban region is 9,014.3 sq mi (3,843.8 sq km)
949 sq mi area of the city UNESCO World Heritage Site is land