Question 1

How did Contra Costa, California vote in the 2024 presidential election?

Accepted Answer

Contra Costa, California voted Democratic in 2024 with a margin of D+38.0. Kamala D Harris received 356,008 votes and Donald Trump received 155,308 out of 528,904 total votes cast, a 7.4-point shift toward Republicans from 2020.

Question 2

What is Contra Costa, California's political history?

Accepted Answer

Contra Costa, California has 40 presidential elections on record, spanning 1868 to 2024. It has voted Democratic in every presidential election since 1988. The largest single-election swing was 71.0 points in 1872.

Question 3

What are the demographics of Contra Costa, California?

Accepted Answer

Contra Costa, California has a population of 1,165,012 according to the 2020 Census. The racial composition is 38.1% non-Hispanic white, 27.6% Hispanic, 8.3% Black. About 45% of residents hold a bachelor's degree or higher. Median household income is $127,229.

Question 4

Which places are most similar to Contra Costa, California?

Accepted Answer

Based on demographic and electoral similarity analysis, the three most similar countys to Contra Costa, California are Mercer, San Mateo, Montgomery. Similarity is computed using a vector embedding of demographic, economic, and electoral characteristics.

Contra Costa County, California

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