Palos Hills is a city in Cook County, Illinois, United States. It is a southwest suburb of Chicago. The city was established in 1958 and had reached a population of 17,484 in the 2010 census. It is the home of Moraine Valley Community College as well as Amos Alonzo Stagg High School.
According to the 2010 census, Palos Hills has a total area of 4.292 square miles (11.12 km2), of which 4.25 square miles (11.01 km2) (or 99.02%) is land and 0.042 square miles (0.11 km2) (or 0.98%) is water.
As of the census of 2000, there were 17,665 people, 7,320 households, and 4,772 families residing in the city. The population density was 4,239.7 people per square mile (1,635.6/km2). There were 7,492 housing units at an average density of 1,798.1 per square mile (693.7/km2). The racial makeup of the city was 87.18% White, 5.48% African American, 0.11% Native American, 2.67% Asian, 1.11% Pacific Islander, 1.57% from other races, and 2.98% from two or more races. Hispanic or Latino of any race were 0.83% of the population.
The top five ancestries reported in Palos Hills as of the 2000 census were Irish (19.1%), Polish (18.9%), German (16.3%), Italian (10.5%) and Greek (6.4%).
There were 7,320 households, out of which 23.6% had children under the age of 18 living with them, 50.8% were married couples living together, 11.1% had a female householder with no husband present, and 34.8% were non-families.