Washington·WA·FIPS 53045

Mason County

Voted Republican in 2024 · 36,689 votes cast

About Mason County

Mason County is a county located in the U.S. state of Washington. As of the 2020 census, the population was 65,726. The county seat and only incorporated city is Shelton. The county was formed out of Thurston County on March 13, 1854. Originally named Sawamish County, it took its present name in 1864 in honor of Charles H. Mason, the first Secretary of Washington Territory.

2024 Presidential Results

All candidates · Mason County, Washington

Donald J Trump(Republican)

49.4%18,127

Won by 912 votes

Kamala D Harris(Democrat)

46.9%17,215

Other(Other)

3.2%1,183

Chase Oliver(Libertarian)

0.4%164

Margin History

Red = Republican, Blue = Democratic

2024R+2.5

2020R+3.9

2016R+6.0

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Swung Left in 2024

Mason County shifted 1.4 points toward Democrats compared to 2020. Voter turnout decreased by 1.6%.

Mason County — Local Discussion

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What does Mason County really think?

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