Iowa·IA·FIPS 19137

Montgomery County

Voted Republican in 2024 · 5,105 votes cast

About Montgomery County

Montgomery County is a county located in the southwestern area of the U.S. state of Iowa. As of the 2020 United States census, the population was 10,330, and was estimated to be 10,002 in 2025. Its population has declined since a peak in 1900, since urbanization and decline of family farms. The county seat is Red Oak. The county was founded by European-American migrants from eastern areas in 1851. It was named in honor of Richard Montgomery, an American Revolutionary War general killed in 1775 while trying to capture Quebec City, Canada.

2024 Presidential Results

All candidates · Montgomery County, Iowa

Donald J Trump(Republican)

136.6%6,972

Won by 3,956 votes

Kamala D Harris(Democrat)

59.1%3,016

Undervotes(Other)

3.6%186

Chase Oliver(Libertarian)

0.7%36

Margin History

Red = Republican, Blue = Democratic

2024R+38.7

2020R+39.1

2016R+42.1

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Swung Left in 2024

Montgomery County shifted 0.4 points toward Democrats compared to 2020. Voter turnout decreased by 4.2%.

Montgomery County — Local Discussion

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What does Montgomery County really think?

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