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Black Diamond is a city in King County, Washington, United States. The population was 4,697 at the 2020 census. In 2022, with a 35% growt…
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Black Diamond is a city in King County, Washington, United States. The population was 4,697 at the 2020 census. In 2022, with a 35% growth rate, Black Diamond was the fastest growing small city in King County.
Country:
United States
State:
Washington
County:
King
Established:
mid-1880s
Incorporated:
February 19, 1959
Elevation:
653 ft (199 m)
Area code:
360
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Data from:
en.wikipedia.org