| Place Name | Black Diamond |
| Place Type | City |
| ZIP Code(s) | 98010 |
| County | King County |
| Area Code(s) | 360 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 4,170 |
| Population Growth Rate (2010-19) | 13.15% |
| Majority Ethnicity | White 83.98% |
| Metro/Micro Stats Area | Seattle-Tacoma-Bellevue, WA |
| US Congressional District(s) | Washington 8th |
| State House Districts | 5 |
| State Senate Districts | 5 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 83.98% |
| African American | 0.99% |
| Hispanic | 0.1% |
| Asian | 7.16% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 7.76% |