7,400/km 2  (19,000/sq mi) is the density of residents in Christchurch . 2,122 sq mi (5,496 sq km ) is the area of the urban region of Christchurch . The metro region is 1,371.76 km 2  (529.64 sq mi) in area . 2,305/km 2  (5,970/sq mi) is the density of inhabitents in  the urban region of Christchurch . Christchurch is named for Confluence of Grand River and Gunnison River . The city has the postal code 34000 to 34990 . The city is Area : 22,142 km2 (8,549 sq mi) in area . The city Christchurch demonym is Tbilisian , Tbilisite . Takele Uma Benti is the mayor of Christchurch . The water area of the city is 3.4 sq mi (8.8 sq km) . 662.1/km 2  (1,715/sq mi) is the density of residents in  the metro region of Christchurch . Christchurch is at an elevation of 990 m . On 1842 the city was incorporated . Christchurch is located in United States . The lowest elevation of Christchurch is 246 ft . Christchurch is the government of Parks Canada . 7°36′29″S 110°12′14″E﻿ / ﻿7.608°S 110.204°E﻿ / -7.608; 110.204 are the coordinates of the city. .  The city area code is +57 2 . The city Christchurch province is Lusaka Province . The highest elevation of Christchurch is 241.9 m (793.6 ft)
865 m  is the lowest point in Christchurch