Williamsville Flag

Williamsville

County:
Sangamon County
County Seat:
No
Area (mi²):
1.548
State:
Illinois

Williamsville is a village located in Sangamon County, Illinois. Williamsville has a 2026 population of 1,441. Williamsville is currently growing at a rate of 0.28% annually and its population has increased by 0.07% since the most recent census, which recorded a population of 1,440 in 2020.

1.4K
Total Population
931
Density (mi²)
4 0.28%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)