Henry, IL Prices for Houses for Sale AVERAGE 178,421 +35% MEDIAN 125,500 +27% Relative Price (per sqft.) PRICE Listings of Henry Homes for Purchase ACTIVE 6 -45% NEW 4 Market Duration of Homes Sold DAYS 45 +7% Local Statistics Population 2,230 (0.01%) House Size (sqft.) 1,497 (-12.18%)