The city was incorporated in 1799 (Guyandotte) . The land area of the city is 39.28 sq mi (101.74 km 2 ) . Population (2015): 2,200,000 is the population of Cairo . The demonym of the city Cairo is Mashhadi, Mashadi, Mashdi (informal) . The urban region is 1,295 sq mi (3,350 km 2 ) in area . 350/sq mi (140/km 2 ) is the density of people in Cairo . The city water area is 0.36 sq mi (0.92 km 2 ) . The coordinates of the city are 6°13′51″N 75°35′26″W﻿ / ﻿6.23083°N 75.59056°W . Cairo is the government of Swedish Ice Hockey Association . Tang Liangzhi is the mayor of Cairo . Cairo is at an elevation of 13.2 ft . (+20) 3 is the area code of Cairo . The Cairo citys' lowest elevation is 1 m  . The Cairo city highest elevation is 324 m (1,063 ft) . The postal code of the city is 130000 . Cairo is located in Indonesia . The city province is Lusaka Province . 4,484/km 2  (11,610/sq mi) is the density of inhabitents in  the metro region of Cairo . Cairo is named for Saint James
+56 2 is a prefix required to call a number in Cairo