Summit or Summit Argo is a village located in the U.S. state of Illinois. It is within Cook County. Summit is famously recognized as the setting to Ernest Hemingway's 1927 short story "The Killers". It has a total area of 2.26 square miles at 41°47′N 87°49′W. As of the 2010 census data, it had a total population of 11,054. The population density was 5,339.31/sq mi. It has Zip code 60501.