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Crystal Lake
City in Illinois, United States
Overview
Crystal Lake, Illinois blends small-town charm with lively amenities, making it a top choice for families and those seeking lakeside recreation. The city features a lively downtown, scenic parks, and easy access to the namesake lake, all within a welcoming community.
Geographic Context
Jurisdiction
United States
State
Illinois
Population
40,269
Time Zone
America/Chicago
Coordinates
42.24°, -88.32°
Key Metrics
Safety Score
78
Female Safety
75
LGBTQ+ Safety
65
Traffic Safety
85
Food Safety
93
Monthly Cost
$2,810
Local Cost
$1,810
Local Income
$3,400
Cashless
86
English
98
Temperature
9.4°C
Summer Avg
22.2°C
Winter Avg
-4.1°C
Record High
40.5°C
Record Low
-38.4°C
Humidity
78%
Precipitation
982 mm
Internet Speed
165 Mbps
Upload
58 Mbps
Latency
14 ms
City Vibrancy
—
Coworking
0
Cafes
0
Nightlife
0
Parks
0
Transport
0
Walk Score
0
Footways
—
Airport
PWK
Distance
37 km
Explore
Frequently Asked Questions
Data sources
Source-backed data
NASA POWER - Climate normals and monthly weather measurements rendered as city weather metrics. Updated 2026-03-22.
World Air Quality Index - Latest available city-level air quality station measurement. Updated 2025-12-05.
Ookla Open Data - Internet speed aggregates for 2024Q3 from 12 tests. Updated 2025-12-05.
OpenStreetMap - Nearby amenities counted from OpenStreetMap-derived city extracts. Updated 2025-12-06.
OpenStreetMap transport extract - Walkability, footway density, and airport access metrics derived from mapped transport features. Updated 2025-12-05.
Oyster List city price model - City price estimates calibrated from local price surveys and jurisdiction-level cost signals. Updated 2026-01-14.
Estimated data
Oyster List AI-assisted estimates - Safety, lifestyle, income, and practical scores are model-assisted estimates derived from source-backed country and city signals. Confidence 78/100.
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