Cortland, IL Prices for Houses for Sale AVERAGE 261,691 +26% MEDIAN 277,450 +22% Relative Price (per sqft.) PRICE Listings of Cortland Homes for Purchase ACTIVE 10 +25% NEW 12 +200% Market Duration of Homes Sold DAYS 50 -18% Local Statistics Population 4,393 (-0.01%) House Size (sqft.) 1,500 (-11.76%)