Summit (or Summit-Argo) is a village in Cook County, Illinois, United States. The population was 11,054 at the 2010 census. The village is arguably best known as the setting to Ernest Hemingway's 1927 short story "The Killers".
According to the 2010 census, Summit has a total area of 2.257 square miles (5.85 km2), of which 2.12 square miles (5.49 km2) (or 93.93%) is land and 0.137 square miles (0.35 km2) (or 6.07%) is water. Most of Summit is in the floodplain of the Des Plaines River.
As of the census of 2000, there were 10,637 people, 3,356 households, and 2,416 families residing in the village. The population density was 5,008.7 people per square mile (1,937.2/km2). There were 3,552 housing units at an average density of 1,672.6 per square mile (646.9/km2). The racial makeup of the village was 63.31% White, 12.05% African American, 0.30% Native American, 1.41% Asian, 0.02% Pacific Islander, 19.64% from other races, and 3.27% from two or more races. Hispanic or Latino of any race were 48.47% of the population, with Mexican Americans representing 44.3%.
The top three non-Hispanic, non-African American ancestries reported in Summit as of the 2000 census were Polish (11.7%), German (5.2%) and Irish (4.4%).
There were 3,356 households, out of which 38.2% had children under the age of 18 living with them, 48.7% were married couples living together, 15.8% had a female householder $32,287 versus $21,628 for females.