Johnston is located in Rhode Island. Johnston, Rhode Island has a population of 29,550. Johnston is more family-centric than the surrounding county with 29.2% of the households containing married families with children. The county average for households married with children is 27.53%.
The median household income in Johnston, Rhode Island is $75,579. The median household income for the surrounding county is $65,797 compared to the national median of $69,021. The median age of people living in Johnston is 45.1 years.
The average high temperature in July is 83.2 degrees, with an average low temperature in January of 17.5 degrees. The average rainfall is approximately 49.7 inches per year, with 36.8 inches of snow per year.