File:Boulder_County_Courthouse_(31861249120).jpg · Wikimedia Commons · See Wikimedia Commons
Boulder County
Sign in to saveAlso known as Boulder County, Colorado, Boulder County, CO
county in Colorado, United States
Key facts
- Country
- United States
- State
- Colorado
- Founded
- November 1, 1861
- Named after
- large granite boulders in area
- Seat
- Boulder
- Largest city
- Boulder
- Total
- 740 sq mi (1,900 km )
- Land
- 726 sq mi (1,880 km )
- Water
- 14 sq mi (36 km ) 1.9%
- Estimate 2025
- 328,560
- Density
- 456/sq mi (176/km )
- Time zone
- UTC−7 ( Mountain )
- Summer dst
- UTC−6 ( MDT )
- Congressional districts
- 2nd , 4th
- Website
- www .bouldercounty .org
via Wikipedia infobox
Wikidata facts
- Population
- 330758
- Area
- 1946
- Official website
- www.bouldercounty.org
- Image
- Boulder County Courthouse (31861249120).jpg
- Households
- 127365
Show 6 more facts
- native label
- Boulder County
- Commons category
- Boulder County, Colorado
- water as percent of area
- 1.9
- inception
- 1861-11-01
- social media followers
- 66014
- per capita income
- 48776
Sources (12)
via Wikidata · CC0
~13 min read
Article
Boulder County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 330,758. The most populous municipality in the county and the county seat is Boulder. Boulder County comprises the Boulder, Colorado Metropolitan Statistical Area, which is included in the 12-county Denver-Aurora-Greeley, CO Combined Statistical Area.
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