Decatur Island is located in Washington. Decatur Island, Washington has a population of 8,718.
The median household income in Decatur Island, Washington is $80,043. The median household income for the surrounding county is $75,308 compared to the national median of $69,021. The median age of people living in Decatur Island is 48.6 years.
The average high temperature in July is 70.2 degrees, with an average low temperature in January of 36.2 degrees. The average rainfall is approximately 25.5 inches per year, with 4.2 inches of snow per year.
