Question 1

How did Jefferson, Illinois vote in the 2024 presidential election?

Accepted Answer

Jefferson, Illinois voted Republican in 2024 with a margin of R+47.7. Kamala D Harris received 4,240 votes and Donald Trump received 12,189 out of 16,662 total votes cast, a 2.6-point shift toward Republicans from 2020.

Question 2

What is Jefferson, Illinois's political history?

Accepted Answer

Jefferson, Illinois has 40 presidential elections on record, spanning 1868 to 2024. It has voted Republican in every presidential election since 2000. The largest single-election swing was 112.6 points in 1872.

Question 3

What are the demographics of Jefferson, Illinois?

Accepted Answer

Jefferson, Illinois has a population of 36,550 according to the 2020 Census. The racial composition is 83.6% non-Hispanic white, 2.8% Hispanic, 6.2% Black. About 18% of residents hold a bachelor's degree or higher. Median household income is $63,118.

Question 4

Which places are most similar to Jefferson, Illinois?

Accepted Answer

Based on demographic and electoral similarity analysis, the three most similar countys to Jefferson, Illinois are Cherokee, Henry, Christian. Similarity is computed using a vector embedding of demographic, economic, and electoral characteristics.

Jefferson County, Illinois

2008 → 2024

Census race profile

Census ACS, 5-year

Religion Census, ACS B16001

Current Illinois Polling

2026 Illinois Senate Democratic Primary

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