Boulder, Colorado is at an elevation of 1601 ft . 4,800/km 2  (12,000/sq mi) is the density of inhabitents in  the urban region of Boulder, Colorado . The water area of the city is 41.21 sq mi (106.73 km 2 ) . The density of  people in Boulder, Colorado is 15,000/km 2  (40,000/sq mi) . The city Boulder, Colorado demonym is Brasiliense . The city province is Lusaka Province . The postal code of the city is 1100 . The metro region has 3,442,361 population . The land area of the city is 840 km 2  (325 sq mi) . Boulder, Colorado is located in Zambia . The mayor of Boulder, Colorado is Thomas Aujero Small .  The city area code is +82-53 . The lowest elevation of Boulder, Colorado is 1,750 m . On 1900 the city was incorporated . 2,947,722 is the population of the urban region of Boulder, Colorado . This city is named after Calgary, Mull . 2,813/km 2  (7,290/sq mi) is the density of inhabitents in  the metro region of Boulder, Colorado
The city Boulder, Colorado is located in Lusaka Province province