Lockport, IL Prices for Houses for Sale AVERAGE 375,729 +17% MEDIAN 376,400 +23% Relative Price (per sqft.) PRICE Listings of Lockport Homes for Purchase ACTIVE 51 +4% NEW 52 -24% Market Duration of Homes Sold DAYS 36 +42% Local Statistics Population 25,887 (0.01%) House Size (sqft.) 1,908 (-0.99%)