Coralville's a city in Johnson County, Iowa, United States. It's a suburb of Iowa City and part of the Iowa City, Iowa Metropolitan Statistical Area. The population was 15,123 at the 2000 census; a special census taken by the city in 2003 counted 17,269 residents, and the United States Census Bureau estimated that 18,250 people lived there in 2007. History In prehistoric times, Coralville was the location of the Edgewater Park Site, a 3,800-year-old archaeological site along the Iowa River. Edg… (More on Coralville)