| Place Name | Grass Valley |
| Place Type | City |
| ZIP Code(s) | 97029 |
| County | Sherman County |
| Area Code(s) | 458,541 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 129 |
| Population Growth Rate (2010-19) | -9.15% |
| Majority Ethnicity | White 90.77% |
| US Congressional District(s) | Oregon 2nd |
| State House Districts | 57 |
| State Senate Districts | 29 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 90.77% |
| African American | 1.15% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 6.54% |
| Hawaiin/Pacific Islander | 1.54% |