Highland Park is a suburban city in Lake County, Illinois, United States, about 25 miles (40 km) north of downtown Chicago. As of the 2018 population estimate, the population was 29,622. Highland Park is one of several municipalities located on the North Shore of the Chicago metropolitan area.
According to the U.S. Census Bureau, the city has a total area of 12.2 square miles (31.7 km), of which 12.2 square miles (31.6 km) is land and 0.039 square miles (0.1 km), or 0.27%, is water. Its geographic features include a 100-foot-high (30 m) bluff running along 6 miles (10 km) of Lake Michigan shoreline and deep, wooded ravines extending up to 1 mile (1.6 km) inland. Elevations range from 580 to 725 feet (177 to 221 m) above sea level.
As of the 2010 United States Census, there were 29,763 people residing in the city. The racial makeup of the city was 91.05% White, 1.84% Black or African American, 2.9% Asian, 0.18% Native American, 0.03% Pacific Islander, 2.51% of some other race and 1.48% of two or more races. 7.28% were Hispanic or Latino (of any race).
As of the census of 2000, there were 31,365 people, 11,521 households, and 8,917 families residing in the city. The population density was 2,537.5 people per square mile (979.8/km). There were 11,934 housing units at an average density of 965.5/sq mi (372.8/km). The racial makeup of the city was 91.20% White, 1.78% African American, 0.08% Native American, 2.28% Asian, 0.01% Pacific Islander, 3.46% from other races, and 1.18% from two or more races. Hispanic or Latino of any race were 8.90% of the population.
There were 11,521 households out of which 36.9% had children under the age of 18 living with them, 69.9% were married couples living together, 5.8% had a female householder with no husband present, and 22.6% were non-families. 19.5% of all households were made up of individuals and 9.3% had someone living alone who was 65 years of age or older. The average household size was 2.71 and the average family size was 3.09.
In the city the population was spread out with 27.0% under the age of 18, 4.6% from 18 to 24, 25.5% from 25 to 44, 27.8% from 45 to 64, and 15.1% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 95.9 males. For every 100 females age 18 and over, there were 92.5 males.
The median income for a household in the city was $100,967, and the median income for a family was $317,235. Males had a median income of $83,121 versus $41,175 for females. The per capita income for the city was $55,331. About 2.3% of families and 3.8% of the population were below the poverty line, including 3.9% of those under age 18 and 3.1% of those age 65 or over.