Des Plaines /dɪs ˈpleɪnz/ is a city in Cook County, Illinois, United States. Its population was 58,364 at the 2010 census. The city is a suburb of Chicago and is located just north of O’Hare International Airport. It is situated on and is named after the Des Plaines River, which runs through the city just east of its downtown area.
Des Plaines is located at 42°2′2″N 87°53′59″W / 42.03389°N 87.89972°W / 42.03389; -87.89972 (42.033848, −87.899786).
According to the 2010 census, Des Plaines has a total area of 14.415 square miles (37.33 km), of which 14.28 square miles (36.99 km) (or 99.06%) is land and 0.135 square miles (0.35 km) (or 0.94%) is water.
Des Plaines is traversed by two interstate highways – I-90 (the Northwest Tollway) and I-294 (the Tri-State Tollway).
Des Plaines is named for the Des Plaines River, which flows through it. The name is from 18th-century French referencing the American sycamore which resembles the European plane tree.
Portions of Des Plaines are underlain by the “Des Plaines Disturbance”, an area in which the layers of sedimentary rock are highly abnormal. This probably represents an ancient meteorite crater, 75 to 200 feet (23 to 61 m) beneath the town. The bedrock was highly fractured by the impact, with large blocks of sediment upended. The crater was eventually filled by glacial activity, so that no trace now remains on the surface.
Addresses in the city limits of Des Plaines have their own numbering system. Areas in unincorporated Maine Township have Des Plaines postal addresses that follow the Chicago numbering system. Devon Avenue in Des Plaines is 3200 South, while it is 6400 North in Chicago. Golf Road runs through a large unincorporated area as 9600 North with a Des Plaines mailing address but is 0 North/South when entering the Des Plaines city limits. As sections become incorporated, they take on the city numbering system. For instance in 2003, land at 9661 West Golf Road, Des Plaines, became 2323 East Golf Road, Des Plaines, when it was formally incorporated into the city limits. The largest unincorporated areas are in the O’Hare area and east of the Tri-State Tollway.
As of the census of 2000, there were 58,720 people, 22,362 households, and 15,071 families residing in the city. The population density was 4,071.2 people per square mile (1,572.3/km²). There were 22,851 housing units at an average density of 1,584.3 per square mile (611.8/km²). The racial makeup of the city was 84.44% White, 7.65% Asian / Asian American, 0.26% Native American, 1.01% Black or African American, 0.02% Pacific Islander, 4.64% from other races, and 1.97% from two or more races. 14.01% were Hispanic or Latino of any race.
Biggest ancestries: German (21.5%), Polish (18.2%), Irish (13.8%), Italian (10.6%), English (5.2%), Swedish (3.3%).
There are 22,362 households, out of which 29.1% have children under the age of 18 living with them, 54.8% were married couples living together, 9.0% had a female householder with no husband present, and 32.6% were non-families. Of all households 28.5% were made up of individuals and 13.3% had someone living alone who was 65 years of age or older. The average household size was 2.58 and the average family size was 3.21.
In the city, the population was spread out with 22.3% under the age of 18, 7.5% from 18 to 24, 29.2% from 25 to 44, 23.8% from 45 to 64, and 17.2% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 93.6 males. For every 100 women age 18 and over, there were 89.6 men.
The median income for a household in the city was $53,638, and the median income for a family was $65,806. Males had a median income of $42,241 versus $30,885 for females. The per capita income for the city was $24,146. About 3.0% of families and 4.6% of the population were below the poverty line, including 4.8% of those under age 18 and 4.8% of those age 65 or over.
A notable amount of Cook County residents reside in unincorporated areas which use a Des Plaines zip code. These areas are densely populated and consist primarily of high density, multi-family housing with a very high percentage of foreign born residents. In the 2000 census the population of these unincorporated areas of Cook County assigned Des Plaines zip codes was 25,617. This unincorporated area has never been a part of the city of Des Plaines, and the majority of this area is separated from the actual city of Des Plaines by a belt of Forest Preserve lands and a Tollway barrier created by I-294.
As of 2010, the median income for a household in Des Plaines had risen to $63,528. As of 2009, per capita income has risen to $30,453.