Lake Zurich is a village in Lake County, Illinois, United States, a northwest suburb of Chicago. The population was 19,631 at the 2010 census.
Lake Zurich is located at 42°11′32″N 88°5′17″W / 42.19222°N 88.08806°W / 42.19222; -88.08806 (42.192324, -88.088098), with an elevation of 850 feet (260 m) above sea level.
According to the 2010 census, Lake Zurich has a total area of 7.187 square miles (18.61 km), of which 6.77 square miles (17.53 km) (or 94.2%) is land and 0.417 square miles (1.08 km) (or 5.8%) is water.
As of the census of 2000, there were 18,104 people, 5,746 households, and 4,866 families residing in the village. The population density was 2,792.3 people per square mile (1,078.7/km²). There were 5,828 housing units at an average density of 898.9 per square mile (347.3/km²). The racial makeup of the village was 92.31% White, 0.81% African American, 0.17% Native American, 3.82% Asian, 0.01% Pacific Islander, 1.97% from other races, and 0.92% from two or more races. Hispanic or Latino of any race were 5.55% of the population.
There were 5,746 households out of which 54.3% had children under the age of 18 living with them, 75.3% were married couples living together, 7.1% had a female householder with no husband present, and 15.3% were non-families. 12.4% of all households were made up of individuals and 3.5% had someone living alone who was 65 years of age or older. The average household size was 3.12 and the average family size was 3.42.
In the village, the population was spread out with 34.1% under the age of 18, 5.0% from 18 to 24, 34.1% from 25 to 44, 21.0% from 45 to 64, and 5.9% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 100.6 males. For every 100 females age 18 and over, there were 97.4 males.
According to a 2007 estimate, the median income for a household in the village was $101,872, and the median income for a family was $108,108. Males had a median income of $63,909 versus $43,047 for females. The per capita income for the village was $30,287. About 2.0% of families and 2.5% of the population were below the poverty line, including 2.9% of those under age 18 and 5.9% of those age 65 or over.