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Cortland, IL

Population
4,676
U.S. Census Population Estimates Program · 2025
Elevation
901 ft
Median Home Value
$233,200
U.S. Census American Community Survey 5-Year · 2024
Median Rent
$1,552/mo
U.S. Census American Community Survey 5-Year · 2024
Median Income
$73,971
U.S. Census American Community Survey 5-Year · 2024

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Cortland in context.

OverallBest places in IllinoisPopulation rankingHighest population places in IllinoisNearest larger communityDeKalb, Illinois3.1 miles away · 40,467 residents.

About Cortland

Cortland is an incorporated town in DeKalb County, Illinois, situated immediately east of DeKalb. Proudly adopting the slogan of being the third-largest town in the state, this growing residential community of approximately 4,564 is served by the DeKalb Community Unit School District Four Hundred Twenty-Eight, which operates Cortland Elementary School locally for students.

Top Rating Signals

Highest current ratings for this town.

Lower County Wildfire Hazard Potential ClassA+100.0ratingLower Projected Late-Century County-Area Exposure to Sea-Level RiseA+100.0ratingRegional Two-Party Electoral BalanceA+99.1rating

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