Pennsylvania·PA·FIPS 42043

Dauphin County

Voted Democratic in 2024 · 149,526 votes cast

About Dauphin County

Dauphin County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 286,401. The county seat is Harrisburg, Pennsylvania's state capital and ninth-most populous city. The county was created on March 4, 1785, from part of Lancaster County and was named after Louis Joseph, Dauphin of France, the first son of King Louis XVI. Dauphin County is included in the Harrisburg–Carlisle Metropolitan Statistical Area. Located within the county is Three Mile Island Nuclear Generating Station, site of the 1979 nuclear core meltdown. The nuclear power plant closed in 2019. The county is part of the South Central region of the commonwealth.

2024 Presidential Results

All candidates · Dauphin County, Pennsylvania

Kamala D Harris(Democrat)

104.8%156,654

Won by 17,706 votes

Donald J Trump(Republican)

92.9%138,948

Other(Other)

1.2%1,786

Chase Oliver(Libertarian)

1.1%1,664

Margin History

Red = Republican, Blue = Democratic

2024D+5.9

2020D+8.5

2016D+2.9

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Swung Right in 2024

Dauphin County shifted 2.6 points toward Republicans compared to 2020. Voter turnout increased by 1.5%.

Dauphin County — Local Discussion

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What does Dauphin County really think?

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