The city province is Gauteng . The city is 344.5 km 2  (133.01 sq mi) in area . The Grand Junction, Colorado city highest elevation is 5,364 m (17,598 ft) . Grand Junction, Colorado is located in Republic of the Congo . The density of  residents in  the metro region of Grand Junction, Colorado is 1,600/sq km  (4,200/sq mi) . The area of the urban region is Area:   6,800 km2 (2,600 sq mi) .  39°1′10″N 125°44′17″E﻿ / ﻿39.01944°N 125.73806°E are the coordinates of the city. . This city is named after Society of the Cincinnati . 985.13/km 2  (2,551.5/sq mi) is the density of residents in Grand Junction, Colorado . 8,600/km 2  (22,000/sq mi) is the density of residents in  the urban region of Grand Junction, Colorado . The city land area is 194.74 sq mi (504.38 km 2 ) . The demonym of the city Grand Junction, Colorado is Tbilisian , Tbilisite . The city was incorporated in 1842 . The city water area is 551.92 sq mi (1,429.46 km 2 ) . Tang Liangzhi is the mayor of Grand Junction, Colorado . The population of the metro region is 1,485,293 . The lowest elevation of Grand Junction, Colorado is 1,750 m . Grand Junction, Colorado is at an elevation of 1839 m .  The city area code is 242
57 + 5 is a prefix required to call a number in Grand Junction, Colorado