| Place Name | Sudden Valley |
| Place Type | Census Designated Place |
| ZIP Code(s) | 98226 98229 98284 |
| County | Whatcom County |
| Area Code(s) | 360 |
| Timezone | Pacific Standard Time (PST) |
| Population (2022) | 6,625 |
| Population Growth Rate (2010-19) | -1.35% |
| Majority Ethnicity | White 86.21% |
| Metro/Micro Stats Area | Bellingham, WA |
| US Congressional District(s) | Washington 2nd |
| State House Districts | 40 |
| State Senate Districts | 40 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 86.21% |
| African American | 0.98% |
| Hispanic | 0.38% |
| Asian | 1.78% |
| Native American | 0.28% |
| Hawaiin/Pacific Islander | 10.37% |