Pennsylvania·PA·FIPS 42045

Delaware County

Voted Democratic in 2024 · 328,172 votes cast

About Delaware County

Delaware County, colloquially referred to as Delco, is in the Commonwealth of Pennsylvania. With a population of 576,830 as of the 2020 census, it is the fifth-most populous county in Pennsylvania and the third-smallest in area. The county was created on September 26, 1789, from part of Chester County and named for the Delaware River. The county is part of the Philadelphia metropolitan area, or Delaware Valley, region of the commonwealth.

2024 Presidential Results

All candidates · Delaware County, Pennsylvania

Kamala D Harris(Democrat)

122.7%402,648

Won by 155,806 votes

Donald J Trump(Republican)

75.2%246,842

Other(Other)

1.3%4,254

Chase Oliver(Libertarian)

0.8%2,600

Margin History

Red = Republican, Blue = Democratic

2024D+23.7

2020D+26.8

2016D+22.4

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Swung Right in 2024

Delaware County shifted 3.1 points toward Republicans compared to 2020. Voter turnout increased by 0.1%.

Delaware County — Local Discussion

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What does Delaware County really think?

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