Grayslake village, Illinois
Official LSAD Designation: Grayslake village • Census GEOID: 1731121
• Lake County
Grayslake village is an incorporated village in Lake County, Illinois. According to official records from the Census (2025), Grayslake village had an estimated population of 21,140 residents. Official Census Bureau geographic records classify this community under LSAD designation Grayslake village (GEOID 1731121).
Local Government Administration U.S. Census Bureau GMAF
Village Of Grayslake
Municipal
Official Title:
Finance Officer Treasurer
Address:
10 SOUTH SEYMOUR, GRAYSLAKE IL 60030
County Of Lake
County
Official Title:
Deputy Finance Director
Address:
18 N COUNTY ST, 9TH FL, WAUKEGAN IL 60085-4304
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 21,140 | 2025 |
| Median Household Income | $113,972 | 2020-2024 |
| Median Home Value | $309,500 | 2020-2024 |
| Land Area | 10.93 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).