Boulder County

Boulder County is an administrative division in Colorado that stretches across the Northern Front Range, encompassing diverse landscapes ranging from high plains to mountainous terrain at the foothills of the Rocky Mountains. The area is governed by three elected commissioners and includes ten incorporated municipalities, with Boulder serving as the county seat and primary population hub.

The county was established in 1861 as an administrative district in a gold mining region, where large granite boulders initially made prospecting difficult in the Boulder Creek area. The region's name traces back to these massive stones that shaped early settlement patterns.

The area is shaped by a strong connection to outdoor activities, with hiking, climbing, and mountain recreation woven into daily life and community identity. This orientation toward nature influences how residents and visitors spend their time and define the region's character.

The area is best explored by car, as it covers large distances and diverse terrain that cannot be easily reached on foot. Visitors should be prepared for varying weather conditions across the different elevations between plains and mountains.

A major wildfire in December 2021 destroyed nearly 1,000 structures and forced the evacuation of some 33,000 residents, becoming one of the most destructive fires in state history. The fire left visible marks on the landscape that visitors can still observe when traveling through affected areas today.

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: December 14, 2025 18:32