Black Diamond, Washington | |
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City of Black Diamond | |
![]() Top Works at Mine 11, Black Diamond, ca. 1915. | |
![]() Location of Black Diamond, Washington | |
Coordinates: 47°19′4″N 122°0′53″W / 47.31778°N 122.01472°W | |
Country | United States |
State | Washington |
County | King |
Established | mid-1880s |
Incorporated | February 19, 1959 |
Government | |
• Type | Mayor–council[1] |
• Mayor | Carol Benson[1] |
Area | |
• Total | 7.19 sq mi (18.63 km2) |
• Land | 6.55 sq mi (16.96 km2) |
• Water | 0.64 sq mi (1.67 km2) |
Elevation | 653 ft (199 m) |
Population | |
• Total | 4,697 |
• Estimate (2022)[4] | 6,336 |
• Density | 729.92/sq mi (281.83/km2) |
Time zone | UTC-8 (Pacific (PST)) |
• Summer (DST) | UTC-7 (PDT) |
ZIP code | 98010 |
Area code | 360 |
FIPS code | 53-06330 |
GNIS feature ID | 1516603[5] |
Website | blackdiamondwa.gov |
Black Diamond is a city in King County, Washington, United States. The population was 4,697 at the 2020 census.[3] In 2022, with a 35% growth rate,[6] Black Diamond was the fastest growing small city in King County.[7]
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