McHenry, IL Prices for Houses for Sale AVERAGE 372,041 +25% MEDIAN 317,890 +28% Relative Price (per sqft.) PRICE Listings of McHenry Homes for Purchase ACTIVE 93 +5% NEW 100 -34% Market Duration of Homes Sold DAYS 36 +4% Local Statistics Population 27,100 (0.00%) House Size (sqft.) 1,903 (14.75%)