population density was . There were 13,894 housing units at an average density of . The racial makeup of the city was 72.3% White, 24.7% African American, 0.18% Native American, 0.4% Asian, <0.1% Pacific Islander, 0.7% from other races, and 1.7% from two or more races. Hispanic or Latino people of any race were 1.5% of the population. There were 12,518 households, out of which 29.3% had children under the age of 18 living with them, 39.3% were married couples living together, 17.4% had a female householder with no husband present, and 38.9% were non-families. 33.3% of all households were made up of individuals, and 13.8% had someone living alone who was 65 years of age or older. The average household size was 2.36 and the average family size was 3.02. In the city, the population was spread out, with 25.8% under the age of 18, 9.1% from 18 to 24, 29.1% from 25 to 44, 20.0% from 45 to 64, and 16.0% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 88.4 males. For every 100 females age 18 and over, there were 83.1 males. The median income for a household in the city was $31,213, and the median income for a family was $37,910. Males had a median income of $33,083 versus $22,485 for females. The per capita income for the city was $16,817. About 14.7% of families and 18.7% of the population were below the poverty line, including 26.8% of those under age 18 and 13.2% of those age 65 or over. Economy In the late 19th and 20th centuries, Alton became a town of heavy industry and manufacturing. Laclede Steel established major steel manufacturing operations in the town. Local industry also includes Cope Plastics and Hanley Industries. Alton was home to once-thriving, now defunct, industries such as the Owens-Illinois Glass Bottle Works and Alton Box Board Company (a maker of all types of cardboard boxes for all types of uses). Restructuring in the industry in the mid-20th century led Alton to create a new future. It has facilities for corporate and vacation retreats and it has transitioned into a popular tourist destination. Alton's location and historical heritage make it a popular destination for antique shopping, touring historic areas, and gambling aboard the Argosy Casino. Other Greater Alton attractions include Alton Marina; nine golf courses, including