Boulder, Colorado
View of South Boulder from Bear Peak
View of South Boulder from Bear Peak
Official seal of Boulder, Colorado
Seal
Location of Boulder in Boulder County, Colorado
Location of Boulder in Boulder County, Colorado
Coordinates: 40°00′54″N 105°16′14″W
[2]
Country United States
State Colorado
County Boulder[1]
Settled 1858 as Boulder City, N.T.
Incorporated 1871-11-04[3]
Government
 • Type Home rule municipality[1]
 • Mayor Suzanne Jones
 • Mayor Pro Tem Aaron Brockett
Area
 • Home Rule Municipality 25.85 sq mi (66.95 km2)
 • Land 24.84 sq mi (64.33 km2)
 • Water 1.01 sq mi (2.61 km2)
Elevation 5,328 ft (1,624 m)
Population 
 • Home Rule Municipality 97,385
 • Estimate 
(2016)[6]
108,090
 • Rank US: 278th
 • Density 4,351.62/sq mi (1,680.14/km2)
 • Metro
313,333 (US: 160th)
Demonym(s) Boulderite
Time zone UTC-7 (MST)
 • Summer (DST) UTC-6 (MDT)
ZIP codes[7]
80301-80310, 80314, 80321-80323, 80328, 80329
Area code(s) Both 303 and 720
FIPS code 08-07850
Highways US 36SH 7SH 52SH 93SH 119SH 157
Website bouldercolorado.gov