6°13′51″N 75°35′26″W﻿ / ﻿6.23083°N 75.59056°W are the coordinates of the city. . Boulder, Colorado is at an elevation of 3264 ft . Boulder, Colorado is named for John Hunt . The city was incorporated in September 20, 1917 . The land area of the city is 840 km 2  (325 sq mi) . Boulder, Colorado has Population: 1,747,152 population . +374 10 is the area code of Boulder, Colorado . 2,305/km 2  (5,970/sq mi) is the density of people in  the urban region of Boulder, Colorado . The population of the metro region is 2,452,656 . Boulder, Colorado is located in Zulia . Boulder, Colorado is the government of Ministry of Culture . Rafael Greca (PMN) is the mayor of Boulder, Colorado . The highest elevation of Boulder, Colorado is 2,715 m (8,907 ft) . The city water area is 4.12 sq mi (10.67 km 2 ) . 1,352.5/km 2  (3,527/sq mi) is the density of people in  the metro region of Boulder, Colorado . 630/sq km  (1,600/sq mi) is the density of people in Boulder, Colorado . The city Boulder, Colorado demonym is Medellinense  ,  Paisa . The postal code of the city is 080020 . The area of the urban region is 1,770 sq mi (4,600 km 2 ) . The Boulder, Colorado citys' lowest elevation is 190 m 
There are more than 545 residents per km 2 in Boulder, Colorado