Tang Liangzhi is the mayor of Boulder, Colorado . The Boulder, Colorado citys' lowest elevation is 378 m  . Population: 971,592 (2016) is the population of Boulder, Colorado . The city Boulder, Colorado demonym is Barranquillero/a . The land area of the city is 8.921 sq mi (23.106 km 2 ) . Boulder, Colorado is located in Czech Republic . On 1799 (Guyandotte) the city was incorporated . The city Boulder, Colorado province is Algiers Province . The Boulder, Colorado city highest elevation is 14,110 ft (4,300 m) . Boulder, Colorado is at an elevation of 277 m . The metro region is 474.649 sq mi (1,229.34 km2) in area . The density of  inhabitents in  the urban region of Boulder, Colorado is 4,800/km 2  (12,000/sq mi) . 227.70 km 2  (87.92 sq mi) is the area of the urban region of Boulder, Colorado . Boulder, Colorado is the government of U.S. National Park Service . 216  (Asian side) is the area code of Boulder, Colorado . 210.9/km 2  (546.2/sq mi) is the density of people in  the metro region of Boulder, Colorado . The water area of the city is 1.63 sq mi (4.23 km 2 ) 1.1% . The postal code of the city is 16000 . 0°57′50″N 74°47′47″W﻿ / ﻿10.96389°N 74.79639°W are the coordinates of the city. . The density of  people in Boulder, Colorado is 3,200/km 2  (8,200/sq mi)
216  (Asian side) is a prefix required to call a number in Boulder, Colorado