to Glen Carbon and south to Caseyville. Demographics As of the census of 2010, there were 25,579 people, 10,458 households, and 6,672 families residing in the city. The population density was . There were 11,025 housing units at an average density of . The racial makeup of the city was 87.4% White, 11.2% African American, 0.8% Native American, 1.1% Asian, 0.1% Pacific Islander, and 1.7% from other races (according to the "race alone of in combination" section of the Census Summary File 1). There were 10,458 households, out of which 29.3% had children under the age of 18 living with them, 48.1% were married couples living together, 11.9% had a female householder with no husband present, and 36.2% were non-families. 30.1% of all households were made up of individuals, and 11.8% had someone living alone who was 65 years of age or older. The average household size was 2.35 and the average family size was 2.94. In the city, the age distribution of the population shows 23.2% under the age of 18, 9.7% from 18 to 24, 30.5% from 25 to 44, 21.9% from 45 to 64, and 14.6% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 93.3 males. For every 100 females age 18 and over, there were 88.3 males. The median income for a household in the city was $42,353, and the median income for a family was $54,956. Males had a median income of $39,379 versus $27,409 for females. The per capita income for the city was $22,048. About 5.6% of families and 7.2% of the population were below the poverty line, including 11.2% of those under age 18 and 6.6% of those age 65 or over. Culture Collinsville is the self-proclaimed "Horseradish Capital of the World", and sponsors an annual Horseradish Festival. The area is said to produce 85% of the world's horseradish, of such high quality that Germany and China (key users of the herb) import it for gourmet use. The Horseradish Festival is held annually during the first weekend in June at Woodland Park located off Route 159 in Collinsville. It has activities for all ages, including a 5K run, live music, a beauty pageant, and root-grinding demonstrations. Known for its large ethnic Italian population, descendants of late 19th and early 20th-century immigrants, Collinsville hosts an annual Italian Fest in the fall.