Black Diamond is located in Washington. Black Diamond, Washington has a population of 4,968. Black Diamond is less family-centric than the surrounding county with 26% households with children. The county percentage for households with children is 26%.
The median household income in Black Diamond, Washington is $112,905. The median household income for the surrounding county is $102,088 compared to the national median of $66,222. The median age of people living in Black Diamond is 45.2 years.
The average high temperature in July is 75.2 degrees, with an average low temperature in January of 32 degrees. The annual precipitation is 57.12.