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]
CountryUnited States
StateColorado
CountyBoulder[1]
Settled1858 as Boulder City, N.T.
Incorporated1871-11-04[3]
Government
 • TypeHome rule municipality[1]
 • MayorSuzanne Jones
 • Mayor Pro TemAaron Brockett
Area
 • Home Rule Municipality25.85 sq mi (66.95 km2)
 • Land24.84 sq mi (64.33 km2)
 • Water1.01 sq mi (2.61 km2)
Elevation5,328 ft (1,624 m)
Population 
 • Home Rule Municipality97,385
 • Estimate 
(2016)[6]
108,090
 • RankUS: 278th
 • Density4,351.62/sq mi (1,680.14/km2)
 • Metro
313,333 (US: 160th)
Demonym(s)Boulderite
Time zoneUTC-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 code08-07850
HighwaysUS 36SH 7SH 52SH 93SH 119SH 157
Websitebouldercolorado.gov