Holcomb, Illinois — City Overview

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Living in Holcomb, summers are warm, peaking at 84.0°F in Jul, while winters are cold — Jan lows average 14.6°F. At 6132 heating degree days per year, winter energy bills are significant. With 37.0 inches annually, the climate is relatively dry. Median household income: $51,875. With a 32.9% poverty rate and 75.9% homeownership, the community reflects a stable residential mix. Air quality is Good — avg AQI 35 over the past week.

View Holcomb city guide

Updated October 15, 2026.

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