Williamson is a village in Madison County, Illinois, with a population of approximately 164.
Population164
Median Home$75,500
Area1.17 sq mi
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Recent News
All news →NewsMAR 13, 2026
Tornado damage in Grafton, Williamson
Tornado damage in Grafton, Williamson KSDK
KSDKRead article ↗
NewsMAR 11, 2026
Slow start to 2026 Illinois primary election early voting in Williamson County
Slow start to 2026 Illinois primary election early voting in Williamson County KFVS12
KFVS12Read article ↗
NewsMAR 11, 2026
Slow start to 2026 Illinois primary election early voting in Williamson County
Slow start to 2026 Illinois primary election early voting in Williamson County KFVS12
KFVS12Read article ↗
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