Boulder County, Administrative division in Colorado, US
Boulder County spans 740 square miles across the Northern Front Range, encompassing diverse landscapes from high plains to mountainous terrain at the foothills of the Rocky Mountains.
The county, established in 1861, developed from a gold mining region where large granite boulders initially hindered prospectors' efforts in the Boulder Creek area.
The region maintains numerous protected natural spaces, including sections of Arapaho National Forest, Roosevelt National Forest, and Rocky Mountain National Park, frequented by outdoor enthusiasts.
The county operates through three elected commissioners and contains ten incorporated municipalities, with Boulder serving as both the county seat and largest population center.
The Marshall Fire of December 2021 affected Boulder County with unprecedented intensity, leading to the evacuation of 33,000 residents and destruction of 991 structures.
Location: Colorado
Inception: November 1, 1861
Capital city: Boulder
Shares border with: Larimer County, Weld County, Broomfield County, Jefferson County, Gilpin County, Grand County
Website: http://bouldercounty.org
GPS coordinates: 40.09000,-105.36000
Latest update: May 26, 2025 21:05
Longs Peak
28.4 km
Rollins Pass
32.5 km
Flatirons
13.1 km
Folsom Field
12 km
NIST-F1
13.5 km
Chapel on the Rock
23 km
Boulder Public Library
10.8 km
Eldorado Canyon State Park
18.7 km
Indian Peaks Wilderness
18.4 km
Mesa Laboratory
14.4 km
Gross Reservoir
15.8 km
Mount Meeker
27.3 km
Switzerland Trail
11.6 km
Bear Peak
15.5 km
Green Mountain (Boulder, Colorado)
13 km
Colorado Shakespeare Festival
12.2 km
Barker Meadow Reservoir
17.9 km
Chautauqua Auditorium
12.3 km
Agnes Vaille Shelter
29.2 km
Eldorado Mountain
20.4 km
Arapaho Glacier
25.6 km
North Arapaho Peak
25.7 km
Lone Eagle Peak
25.7 km
University of Colorado Museum of Natural History
11.9 km
Mount Audubon
21.9 km
Boulder County Courthouse
10.6 km
Walker Ranch
15.3 km
Left Hand Canyon
5.1 kmReviews
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