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Arapahoe County
Sign in to saveAlso known as Arapahoe County, Colorado, Arapahoe County, CO
county in Colorado, United States
Key facts
- Country
- United States
- State
- Colorado
- Founded
- November 1, 1861
- Named after
- The Arapaho Nation
- Seat
- Littleton
- Largest city
- Aurora
- Total
- 805 sq mi (2,080 km )
- Land
- 798 sq mi (2,070 km )
- Water
- 7.3 sq mi (19 km ) 0.9%
- Estimate 2025
- 673,820
- Density
- 820/sq mi (317/km )
- Time zone
- UTC−7 ( Mountain )
- Summer dst
- UTC−6 ( MDT )
- Congressional districts
- 1st , 4th , 6th
- Website
- www .arapahoegov .com
via Wikipedia infobox
~12 min read
Encyclopedic overview
Arapahoe County (/əˈræpəhoʊ/ ə-RAP-ə-hoh) is a county located in the U.S. state of Colorado. As of the 2020 census, its population was 655,070, making it the third-most populous county in Colorado. The county seat is Littleton, and the most populous city is Aurora. The county was named for the Arapaho Native American tribe, who once lived in the region. Arapahoe County is part of the Denver-Aurora-Lakewood metropolitan statistical area. Arapahoe County calls itself "Colorado's First County", since its origins antedate the Pike's Peak Gold Rush.
History
Excerpted from Wikipedia’s “Arapahoe County” article, available under the CC BY-SA 4.0 licence.