Cortland, Illinois — City Overview

Living in Cortland, summers are warm, peaking at 83.1°F in Jul, while winters are cold — Jan lows average 15.8°F. At 6090 heating degree days per year, winter energy bills are significant. The area receives 41.1 inches of rainfall per year. Within 5 miles: 52 parks, 11 dining spots and 9 schools. For hospital care, the nearest facility is in a neighboring city. Median household income: $76,869. With a 4.4% poverty rate and 72.9% homeownership, the community reflects a stable residential mix. Air quality is Good — avg AQI 36 over the past week.

View Cortland city guide

Updated September 16, 2026.

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