| Place Name | Rosalia |
| Place Type | Town |
| ZIP Code(s) | 99170 |
| County | Whitman County |
| Area Code(s) | 509 |
| Timezone | Pacific Standard Time (PST) |
| Population (2022) | 669 |
| Population Growth Rate (2010-19) | 8.73% |
| Majority Ethnicity | White 86.84% |
| Metro/Micro Stats Area | Pullman, WA |
| US Congressional District(s) | Washington 5th |
| State House Districts | 9 |
| State Senate Districts | 9 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 86.84% |
| African American | 0% |
| Hispanic | 0.64% |
| Asian | 0.8% |
| Native American | 0.32% |
| Hawaiin/Pacific Islander | 11.4% |