Boulder County on the map of Colorado 2024. Cities, roads, borders and directions in Boulder County of Colorado.

Boulder County is located in the northern suburban part of Denver, Colorado. This special county is named after the abundance of granite boulders along Boulder Creek. The county seat of Boulder County is Boulder. The county's area is about 740 square miles. Established in 1861, today Boulder County is home to 330 thousand residents. This map shows the borders of Boulder County as well as neighboring counties, including major highways and natural objecsts as of 2024. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of Boulder County.