About This Place
Rock City is a village in Stephenson County, Illinois, United States. The population was 315 at the 2010 census, up from 313 at the 2000 census.
Rock City is located at 42°24′46″N 89°28′5″W / 42.41278°N 89.46806°W / 42.41278; -89.46806 (42.412685, -89.468058).
According to the United States Census Bureau, the village has a total area of 0.1 square miles (0.4 km²), all of it land.