2,947,722 is the population of the urban region of Boulder, Colorado . The mayor of Boulder, Colorado is Thomas Aujero Small . The Boulder, Colorado citys' lowest elevation is 5,740 ft  . Boulder, Colorado is named for Calgary, Mull . The land area of the city is 840 km 2  (325 sq mi) . 2,813/km 2  (7,290/sq mi) is the density of inhabitents in  the metro region of Boulder, Colorado . The city has the postal code 1100 . Boulder, Colorado is at an elevation of 488 m . The city Boulder, Colorado demonym is Brasiliense . +82-53 is the area code of Boulder, Colorado . The density of  people in Boulder, Colorado is 15,000/km 2  (40,000/sq mi) . The city Boulder, Colorado province is Lusaka Province . The city water area is 41.21 sq mi (106.73 km 2 ) . The density of  inhabitents in  the urban region of Boulder, Colorado is 4,800/km 2  (12,000/sq mi) . On 1900 the city was incorporated . Boulder, Colorado is located in Zambia . The metro region has 3,442,361 population
More than 57 km 2 area of the city Boulder, Colorado is water