New Jersey·NJ·FIPS 34023

Middlesex County

Voted Democratic in 2024 · 365,187 votes cast

About Middlesex County

Middlesex County is a county located in the U.S. state of New Jersey, extending inland from the Raritan Valley region to the northern portion of the Jersey Shore. As of the 2020 United States census, the county was the state's third-most populous county with a population of 863,162, its highest decennial count ever and an increase of 53,304 (+6.6%) from the 2010 census count of 809,858, which in turn reflected an increase of 59,696 (8.0%) from the 750,162 counted in the 2000 census. The United States Census Bureau's Population Estimates Program estimated a 2025 population of 883,335, an increase of 20,173 (+2.3%) from the 2020 decennial census. Middlesex County is part of the New York metropolitan area. Many communities within the county serve as commuter towns to and from New York City and other points north. The county is part of the Central Jersey region of the state.

2024 Presidential Results

All candidates · Middlesex County, New Jersey

Kamala D Harris(Democrat)

52.5%191,802

Won by 29,343 votes

Donald J Trump(Republican)

44.5%162,459

Other(Other)

2.7%10,042

Chase Oliver(Libertarian)

0.2%884

Margin History

Red = Republican, Blue = Democratic

2024D+8.0

2020D+22.1

2016D+21.5

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Swung Right in 2024

Middlesex County shifted 14.1 points toward Republicans compared to 2020. Voter turnout decreased by 2.5%.

Middlesex County — Local Discussion

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What does Middlesex County really think?

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