Grayslake
A village in Lake County, Illinois — population 20,584 as of 2020.
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This Afternoon
78°F
Slight Chance Showers And Thunderstorms22% precip
Tonight
56°F
Slight Chance Showers And Thunderstorms then Mostly Clear21% precip
Sunday
74°F
Sunny
Sunday Night
54°F
Mostly Clear
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Grayslake by the numbers
Population
20,584Population figure, 2020
Households & income
- Area
- 10.89 sq mi (28.2 km²), 0.22 sq mi water
- Median age
- 37.2
- Households
- 8,165
- Persons per household
- 2.5
- Median household income
- $113,972
- Median house value
- $309,500
Municipal office
- Office
- FINANCE OFFICER TREASURER
- Address
- 10 SOUTH SEYMOUR, GRAYSLAKE, IL 60030