Cost of living in Black Diamond, WA

Black Diamond is a Census city in King County, WA. ACS 2024 5-year population is 5,961. Median gross rent is $1,453 (ACS 2024 5-year, this place). Median home value is $779,100. Median household income is $141,383. Insurance is the NAIC state average; food is a USDA plan — no town indexes.