| Place Name | Arlington |
| Place Type | City |
| ZIP Code(s) | 97812 |
| County | Gilliam County |
| Area Code(s) | 458,541 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 601 |
| Population Growth Rate (2010-19) | 7.17% |
| Majority Ethnicity | White 90.98% |
| US Congressional District(s) | Oregon 2nd |
| State House Districts | 57 |
| State Senate Districts | 29 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 90.98% |
| African American | 0% |
| Hispanic | 0.56% |
| Asian | 0.94% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 7.52% |