As of the census of 2000, there were 20,742 people, 7,298 households, and 5,451 families residing in the village. The population density was 913.2/km sq (2,364.5/mi sq). There were 7,458 housing units at an average density of 328.3/km sq (850.2/mi sq). The racial makeup of the village was 92% White, 5% Asian and 1% African American. 0.1% is Native American. About 1% each are classified as belonging to Race (United States Census)other races or to multiracialtwo or more races. 3% of the population were Hispanic or Latino of any race. While still largely homogenous compared to the country as a whole, Libertyville has become far more integrated than it once was; the 1960 census, for example, found a total of seven non-white residents, making the town 99.9% white. http://www.encyclopedia.chicagohistory.org/pages/740.html There were 7,298 households out of which 40% had children under the age of 18 living with them, 66% were Marriagemarried couples living together, 7% had a female householder with no husband present, and 25% were non-families. 22% of all households were made up of individuals and 8% had someone living alone who was 65 years of age or older. The average household size was 2.7 and the average family size was 3.2. 28% of the village's population is under the age of 18, 5% from 18 to 24, 27% from 25 to 44, 28% from 45 to 64, and 12% 65 years of age or older. The median age is 39 years. For every 100 females there were 92.9 males. For every 100 females age 18 and over, there were 86.9 males. The median income for a household in the village was $88,828, and the median income for a family was $103,573. Males had a median income of $72,320 versus $39,455 for females. The per capita income for the village was $40,426. About 1.9% of families and 3.5% of the population were below the poverty line, including 4.2% of those under age 18 and 4.9% of those age 65 or over. Source: http://en.wikipedia.org/wiki/Libertyville%2C_Illinois