| Place Name | Roslyn |
| Place Type | City |
| ZIP Code(s) | 98941 |
| GEOID | 5360055 |
| County | Kittitas County |
| Area Code(s) | 509 |
| Timezone | Pacific Standard Time (PST) |
| Population (2021) | 703 |
| Population Growth Rate (2010-19) | 6.38% |
| Majority Ethnicity | White 83.45% |
| Metro/Micro Stats Area | Ellensburg, WA |
| US Congressional District(s) | Washington 8th |
| State House Districts | 13 |
| State Senate Districts | 13 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 83.45% |
| African American | 0% |
| Hispanic | 5.05% |
| Asian | 3.93% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 7.57% |