Norridge is a village in Cook County, Illinois, United States. The population was 14,572 at the 2010 census. The current mayor of Norridge is Ronald A. Oppedisano. The village and its neighbor to the east, Harwood Heights, are completely surrounded by the city of Chicago. Norridge is sometimes referred to as the "Island Within a City". A history book of the same name was written by Norridge author Tom McGowen.