Boulder, Colorado
Boulder | |
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Pearl Street Mall in downtown Boulder, 2009 | |
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Seal | |
Location of Boulder in Boulder County, Colorado | |
Boulder Location within Colorado Boulder Location within the United States | |
| Coordinates: 40°00′54″N 105°16′14″W / 40.0150°N 105.2705°W | |
| Country | United States |
| State | Colorado |
| County | Boulder |
| Settled | 1858 as Boulder City, N.T. |
| Incorporated | November 4, 1871 |
| Government | |
| • Type | Home rule city |
| • Mayor | Aaron Brockett (D) |
| • Mayor Pro Tem | Lauren Folkerts |
| Area | |
| 27.366 sq mi (70.877 km2) | |
| • Land | 26.328 sq mi (68.188 km2) |
| • Water | 1.038 sq mi (2.689 km2) |
| Elevation | 5,319 ft (1,621 m) |
| Population (2020) | |
| 108,250 | |
• Estimate (2024) | 106,803 |
| • Rank | 12th in Colorado 324th in United States |
| • Density | 4,112/sq mi (1,588/km2) |
| • Metro | 330,758 (155th) |
| • CSA | 3,623,560 (17th) |
| • Front Range | 5,055,344 |
| Demonym | Boulderite |
| GDP | |
| • Metro | $35.608 billion (2022) |
| Time zone | UTC−07:00 (MST) |
| • Summer (DST) | UTC−06:00 (MDT) |
| ZIP Codes | 80301-80310, 80314, 80321-80323, 80328, 80329 |
| Area codes | 303/720/983 |
| GNIS pop ID | 178680 |
| GNIS city ID | 2409883 |
| FIPS code | 08-07850 |
| Major highways | |
| Website | City of Boulder |
Boulder is a home rule city that is the county seat of, and the most populous municipality in, Boulder County, Colorado, United States. With a population of 108,250 at the 2020 census, it is the 12th-most populous city in Colorado. Boulder is the primary city of the Boulder, CO Metropolitan Statistical Area, which had 330,758 residents in 2020, and is part of the Front Range Urban Corridor.
Boulder is located at the base of the foothills of the Rocky Mountains, at an elevation of 5,430 feet (1,655 m) above sea level. The city is 25 miles (40 km) northwest of the Colorado state capital of Denver. Boulder is a college town, hosting the University of Colorado Boulder, the flagship and largest campus of the University of Colorado system, as well as numerous research institutes. Starting in 2027, Boulder will become the new home of the Sundance Film Festival.