Crystal Lake, Illinois — City Overview

Living in Crystal Lake, summers are warm, peaking at 83.2°F in Jul, while winters are cold — Feb lows average 16.1°F. At 6109 heating degree days per year, winter energy bills are significant. The area receives 40.0 inches of rainfall per year. Within 5 miles: 88 parks, 3 groceries, 55 dining spots and 11 schools. One hospital serves the immediate area. Median household income: $103,018. With a 5.3% poverty rate and 78.1% homeownership, the community reflects a stable residential mix. Nearby cities: McHenry (7mi NE), Woodstock (8mi NW), Carpentersville (9mi SE). Air quality is Good — avg AQI 37 over the past week.

View Crystal Lake city guide

Updated September 16, 2026.

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