Mount Carroll, Illinois — City Overview

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Living in Mount Carroll, summers are warm, peaking at 84.2°F in Jul, while winters are cold — Feb lows average 13.8°F. At 6141 heating degree days per year, winter energy bills are significant. With 36.7 inches annually, the climate is relatively dry. Median household income: $63,992. With a 9.4% poverty rate and 74.1% homeownership, the community reflects a stable residential mix. Air quality is Good — avg AQI 35 over the past week.

View Mount Carroll city guide

Updated October 31, 2026.

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