Boulder

City in Boulder County, Colorado

View of Boulder, Colorado
Photo: Gtj82 at English Wikipedia · Public domain

Boulder is a city in Boulder County, Colorado, with 108,250 residents (2020 Census). It sits at 5,430 ft (1,655 m) above sea level. The nearest town is Valmont, 2.5 miles E.

About 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 metropolitan 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.

Text: Wikipedia · CC BY-SA 4.0

Boulder weather: 7-day forecast

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Source: National Weather Service (NOAA).

Live webcams in Boulder

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Living in Boulder

Median household income
$87,493
Median home value
$1,039,500
Median rent
$2,018/mo
Median age
28.8
Cost of living and demographics of Boulder ›

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Map of Boulder

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Boulder Street View

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Boulder, CO population

Boulder had 108,250 residents in the 2020 Census.

2020 Census108,250
Density4,013 per sq mi (1,550 per km²)

Source: U.S. Census Bureau, Decennial Census.

Boulder at a glance

StateColorado (CO)
CountyBoulder County
TypeCity
Population108,250 (2020)
Land area26.97 sq mi (69.9 km²)
Water area1.05 sq mi (2.72 km²)
Elevation5,430 ft (1,655 m)
Coordinates40.0244° N, 105.2513° W
ZIP codes80310, 80301, 80304, 80305
Official websitebouldercolorado.gov
Census code (GEOID)0807850

Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.

Towns near Boulder

Straight-line distance between town centers.

Frequently asked questions about Boulder

What county is Boulder in?

Boulder is in Boulder County, Colorado.

What is the population of Boulder, CO?

108,250 people lived in Boulder at the 2020 Census.

What is the ZIP code of Boulder, CO?

The main ZIP code is 80310. Other ZIP codes: 80301, 80304, 80305.

What is the elevation of Boulder?

5,430 feet (1,655 m) above sea level.

What towns are near Boulder?

Valmont (2.5 mi), Pine Brook Hill (3.1 mi), Seven Hills (4.3 mi), Paragon Estates (4.6 mi), Gunbarrel (5.0 mi).

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