Colorado·CO·FIPS 08005

Arapahoe County

Voted Democratic in 2024 · 325,451 votes cast

About Arapahoe County

Arapahoe County 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.

2024 Presidential Results

All candidates · Arapahoe County, Colorado

Kamala D Harris(Democrat)

58.6%190,725

Won by 65,414 votes

Donald J Trump(Republican)

38.5%125,311

Other(Other)

2.2%7,223

Chase Oliver(Libertarian)

0.7%2,192

Margin History

Red = Republican, Blue = Democratic

2024D+20.1

2020D+24.6

2016D+14.1

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Swung Right in 2024

Arapahoe County shifted 4.5 points toward Republicans compared to 2020. Voter turnout decreased by 7.1%.

Arapahoe County — Local Discussion

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Election data: MIT Election Data Science Lab, Harvard Dataverse (CC BY 4.0)