The city has the postal code 16000 . The density of  residents in  the metro region of Boulder, Colorado is 210.9/km 2  (546.2/sq mi) . On 1799 (Guyandotte) the city was incorporated . Boulder, Colorado is the government of U.S. National Park Service . The city land area is 8.921 sq mi (23.106 km 2 ) . Boulder, Colorado is at an elevation of 277 m . The lowest elevation of Boulder, Colorado is 378 m  . The city water area is 1.63 sq mi (4.23 km 2 ) 1.1% . 3,200/km 2  (8,200/sq mi) is the density of residents in Boulder, Colorado . The highest elevation of Boulder, Colorado is 14,110 ft (4,300 m) . The population of Boulder, Colorado is Population: 971,592 (2016) . Boulder, Colorado is located in Czech Republic . The demonym of the city Boulder, Colorado is Barranquillero/a . 0°57′50″N 74°47′47″W﻿ / ﻿10.96389°N 74.79639°W are the coordinates of the city. . 4,800/km 2  (12,000/sq mi) is the density of residents in  the urban region of Boulder, Colorado . Tang Liangzhi is the mayor of Boulder, Colorado . The area of the metro region is 474.649 sq mi (1,229.34 km2) . The city province is Algiers Province .  The city area code is 216  (Asian side) . The urban region is 227.70 km 2  (87.92 sq mi) in area
Ravinder Bhalla (term ends December 31, 2021) govern the city Boulder, Colorado