The city land area is 225.73 sq km  (87.15 sq mi) . Cairo has Population: 3,457,409 population . The metro region is 4,500 sq mi (11,700 km 2 ) in area . The city has the postal code 090101 to 090158 . The city water area is 551.92 sq mi (1,429.46 km 2 ) . The density of  inhabitents in Cairo is 700/km 2  (1,800/sq mi) . Cairo is at an elevation of 3264 ft . The city Cairo province is Oran Province . Cairo is located in Angkor, Siem Reap, Cambodia .  The city area code is 84 . The area of the urban region is 335.4 sq mi (539.7 km 2 ) . The Cairo city highest elevation is 2,715 m (8,907 ft) . Cairo is the government of Municipality of Quito . The lowest elevation of Cairo is 75 m  . The coordinates of the city are 36°18′N 59°36′E﻿ / ﻿36.300°N 59.600°E . On 1871-11-04 the city was incorporated . The city Cairo demonym is Yerevantsi(s), Yerevanite(s) . The density of  inhabitents in  the urban region of Cairo is 14,100/km 2  (37,000/sq mi) . The density of  inhabitents in  the metro region of Cairo is 4,484/km 2  (11,610/sq mi)
Water covers 1429.46 km 2 area of the city