Coralville is a city in Johnson County, Iowa, United States. It is 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. History Coralville incorporated as a city in 1873. The city's name came from the coral samples that were found in limestone along the Iowa River by a Harvard University zoologist. In its early days Coralville was home to several mil… (More on Coralville)