Lake Bluff is a village in Lake County, Illinois, United States. It is located on the North Shore of Lake Michigan, and is part of the Chicago metropolitan area. As of 2010, the population was 5,722.
Lake Bluff is located in the North Shore area at 42°17′N 87°51′W / 42.283°N 87.850°W / 42.283; -87.850 (42.281, -87.849).
According to the 2010 census, Lake Bluff has a total area of 4.057 square miles (10.51 km), of which 4.05 square miles (10.49 km) (or 99.83%) is land and 0.007 square miles (0.02 km) (or 0.17%) is water. It is bordered by Lake Michigan on the east, Naval Station Great Lakes to the north, Lake Forest to the south, and Libertyville to the west. The town is named for the prominent bluff overlooking Lake Michigan that extends across the eastern boundary.
Half of Lake Bluff’s land area is residential in nature, while the rest is mainly devoted to parks and recreation. Major parks include Blair Park, Ravine Park, Sunrise Park, and Artesian Park.
As of the 2010 US census, there were 5,722 people, 1,992 households, and 1,743 families residing in the village. The population density was 1,492 people per square mile (575.9/km²). There were 2,178 housing units at an average density of 542.5 units per square mile (209.4/km²). The racial makeup of the village was 92.05% White, 0.58% African American, 0.10% Native American, 5.54% Asian, 1.29% Hispanic or Latino, 0% Pacific Islander, 0.44% from other races, and 1.29% from two or more races.
As of 2010, there were 2,178 households, out of which 42.5% had children under the age of 18 living with them, 80.6% were married couples living together, 6.3% had a female householder with no husband present, and 12.1% were non-families. 10.2% of all households were made up of individuals living alone and 6.5% had someone living alone who was 65 years of age or older. The average household size was 2.86 and the average family size was 3.21.
In the village, the population was spread out with 29.3% under the age of 18, 5.5% from 18 to 24, 15.6% from 25 to 44, 27.4% from 45 to 64, and 14.7% who were 65 years of age or older. The median age was 44.8 years. For every 100 females, there were 92.5 males. For every 100 females ages 18 and over, there were 90.4 males.
The median household income was $114,521, and the median income for a family was $124,674. Males had a median income of $92,233 versus $50,352 for females. The per capita income for the village was $54,824. About 0.7% of families and 1.1% of the population were below the poverty line, including 0.6% of those under the age of 18 and 0.0% ages 65 or older.