Rock Island is located in Tennessee. Rock Island, Tennessee has a population of 3,915. Rock Island is more family-centric than the surrounding county with 32.81% of the households containing married families with children. The county average for households married with children is 32.38%.
The median household income in Rock Island, Tennessee is $46,625. The median household income for the surrounding county is $46,189 compared to the national median of $69,021. The median age of people living in Rock Island is 45.3 years.
The average high temperature in July is 88.4 degrees, with an average low temperature in January of 27.8 degrees. The average rainfall is approximately 53 inches per year, with 5.5 inches of snow per year.
