Gary, IN is located in Lake County. It is home to 21115 people. The median household income is $26,691.00 (Source: 2000 Census). The average home value was $53,800.00 (Source: 2000 Census). Nearby towns and cities include Crown Point, Valparaiso, Portage, Merrillville, East Chicago. Find listings of real estate for sale in Gary below.