| Place Name | Winthrop |
| Place Type | Town |
| ZIP Code(s) | 98862 |
| County | Okanogan County |
| Area Code(s) | 509 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 375 |
| Population Growth Rate (2010-19) | 27.92% |
| Majority Ethnicity | White 71.86% |
| US Congressional District(s) | Washington 4th |
| State House Districts | 12 |
| State Senate Districts | 12 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 71.86% |
| African American | 0% |
| Hispanic | 0.6% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 27.54% |