The coordinates of the city are 6°13′51″N 75°35′26″W﻿ / ﻿6.23083°N 75.59056°W . Boulder, Colorado is located in Zulia . +374 10 is the area code of Boulder, Colorado . Rafael Greca (PMN) is the mayor of Boulder, Colorado . 1,352.5/km 2  (3,527/sq mi) is the density of people in  the metro region of Boulder, Colorado . The urban region is 1,770 sq mi (4,600 km 2 ) in area . The city land area is 840 km 2  (325 sq mi) . The density of  people in  the urban region of Boulder, Colorado is 2,305/km 2  (5,970/sq mi) . The Boulder, Colorado city highest elevation is 2,715 m (8,907 ft) . The demonym of the city Boulder, Colorado is Medellinense  ,  Paisa . Boulder, Colorado is the government of Ministry of Culture . Boulder, Colorado is at an elevation of 995 m . Boulder, Colorado is named for John Hunt . 630/sq km  (1,600/sq mi) is the density of people in Boulder, Colorado . The population of the metro region is 2,452,656 . The Boulder, Colorado citys' lowest elevation is 620 ft . Population: 1,747,152 is the population of Boulder, Colorado . The city was incorporated in September 20, 1917 . The city has the postal code 080020 . The water area of the city is 4.12 sq mi (10.67 km 2 )
Lowest point is 2525 m below the highest point of this city