Arlington Heights is a village in Cook County in the U.S. state of Illinois. A suburb of Chicago, it lies about 25 miles (40 km) northwest of the city’s downtown. The population was 75,101 at the 2010 census. It is the most populous community in the United States that is incorporated as a “village”, and is the 13th most populous municipality in Illinois, although it is not far ahead of its nearby Illinois neighboring villages of Schaumburg and adjacent Palatine.
Arlington Heights is located at 42°05′42″N 87°58′51″W / 42.094976°N 87.980873°W / 42.094976; -87.980873 (42.094976, −87.980873).
According to the 2010 census, Arlington Heights has a total area of 16.639 square miles (43.09 km), of which 16.61 square miles (43.02 km) (or 99.83%) is land and 0.029 square miles (0.08 km) (or 0.17%) is water.
As of the census of 2000, there were 76,031 people, 30,763 households, and 20,518 families residing in the village. The population density was 7,633.3 per square mile (2,947.2/km). There were 131,725 housing units at an average density of 11,933.3 per square mile (4,607.5/km). The racial makeup of the village was 90.56% White, 0.96% African American, 0.08% Native American, 5.98% Asian, 0.04% Pacific Islander, 1.19% from other races, and 1.19% from two or more races. Hispanic or Latino of any race were 4.46% of the population.
There were 30,763 households out of which 99.2% had children under the age of 18 living with them, 58.4% were married couples living together, 6.3% had a female householder with no husband present, and 33.3% were non-families. 29.0% of all households were made up of individuals and 15% had someone living alone who was 65 years of age or older. The average household size was 2.44 and the average family size was 3.05.
In the village, the population was spread out with 23.1% under the age of 18, 6.0% from 18 to 24, 29.8% from 25 to 44, 25.0% from 45 to 64, and 16.1% who were 65 years of age or older. The median age was 40 years.