Williamsville is a village in Sangamon County, Illinois, with a population of approximately 1,519.
Population1,519
Median Home$187,000
Area1.55 sq mi
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Recent News
All news →NewsFEB 28, 2026
Williamsville High School (IL) Basketball
Williamsville High School (IL) Basketball MaxPreps.com
MaxPreps.comRead article ↗
NewsFEB 25, 2026
How to watch Illinois high school boys basketball: Auburn vs. Williamsville, Feb. 25
How to watch Illinois high school boys basketball: Auburn vs. Williamsville, Feb. 25 USA TODAY High School Sports
USA TODAY High School SportsRead article ↗
NewsJAN 14, 2026
Calvary & Williamsville move on in winners bracket of Sangamon County Tournament
Calvary & Williamsville move on in winners bracket of Sangamon County Tournament wandtv.com
wandtv.comRead article ↗
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