Williamsville village, Illinois
Official LSAD Designation: Williamsville village • Census GEOID: 1781854
• Sangamon County
Williamsville village is an incorporated village in Sangamon County, Illinois. According to official records from the Census (2025), Williamsville village had an estimated population of 1,437 residents. Official Census Bureau geographic records classify this community under LSAD designation Williamsville village (GEOID 1781854).
Local Government Administration U.S. Census Bureau GMAF
Village Of Williamsville
Municipal
Official Title:
Village President
Address:
141 W MAIN ST, STE 1, WILLIAMSVILLE IL 62693-9732
County Of Sangamon
County
Official Title:
Dep. Auditor
Address:
200 S 9TH ST, STE 201, SPRINGFIELD IL 62701-1967
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 1,437 | 2025 |
| Median Household Income | $106,731 | 2020-2024 |
| Median Home Value | $199,300 | 2020-2024 |
| Land Area | 1.67 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).