Boulder County Boundary Map

Boulder County is a county located in the U.S. state of Colorado of the United States. As of the 2020 census, the population was 330,758. The most populous municipality in the county and the county seat is Boulder.

Country: United States
State: Colorado
Founded: November 1, 1861
Named for: large granite boulders in area
Seat: Boulder
Largest city: Boulder
Congressional districts: 2nd, 4th

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Mount Sanitas Trail

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Hiking · Viewpoints · Wildflowers

Chapel on the Rock

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Experience the rich historical and spiritua…

Royal Arch

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Hiking · Viewpoints · Parks

Deer Mountain Trail

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Hiking · Mountains · Wildlife

Eldora Mountain Resort

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Skiing · Mountains · Romantic

Boulder Falls

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Waterfalls · Hiking · Viewpoints

Eldorado Canyon State Park

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Canyons · Hiking · Climbing

Boulder Creek Path

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Hiking · Parks

Boulder Museum of Contemporary …

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Art galleries · Museums

Scott Carpenter Park

Scott Carpenter Park has a skate park as …

Walker Ranch

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Hiking · Historic places

Hall Ranch N Foothills Open Sp…

Trailforks (12)

Commissioners: “We will continue to value…

Chautauqua Park

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Hiking · Parks · Mountains

Carousel of Happiness

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Unusual attractions

Rabbit Mountain

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Hiking · Mountains · Viewpoints

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Data from: en.wikipedia.org