Iowa·IA·FIPS 19149

Plymouth County

Voted Republican in 2024 · 14,084 votes cast

About Plymouth County

Plymouth County is the westernmost county in the U.S. state of Iowa. As of the 2020 census, the population was 25,698, and was estimated to be 25,697 in 2025. The county seat and the largest city is Le Mars. Plymouth County was named after Plymouth, Massachusetts.

2024 Presidential Results

All candidates · Plymouth County, Iowa

Donald J Trump(Republican)

151.4%21,322

Won by 15,114 votes

Kamala D Harris(Democrat)

44.1%6,208

Undervotes(Other)

3.9%548

Chase Oliver(Libertarian)

0.6%90

Margin History

Red = Republican, Blue = Democratic

2024R+53.7

2020R+49.5

2016R+51.5

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Swung Right in 2024

Plymouth County shifted 4.2 points toward Republicans compared to 2020. Voter turnout decreased by 0.7%.

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No one has claimed Plymouth County yet

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Plymouth County — Local Discussion

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