Gilman, IL Prices for Houses for Sale AVERAGE 89,925 -13% MEDIAN 89,950 +13% Relative Price (per sqft.) PRICE Listings of Gilman Homes for Purchase ACTIVE 1 -86% NEW 0 Market Duration of Homes Sold DAYS 62 -58% Local Statistics Population 1,625 (-0.01%) House Size (sqft.) 1,140 (-23.05%)