| Place Name | Castle Rock |
| Place Type | City |
| ZIP Code(s) | 98611 |
| County | Cowlitz County |
| Area Code(s) | 360 |
| Timezone | Pacific Standard Time (PST) |
| Population (2022) | 2,134 |
| Population Growth Rate (2010-19) | 23.41% |
| Majority Ethnicity | White 88.52% |
| Metro/Micro Stats Area | Longview, WA |
| US Congressional District(s) | Washington 3rd |
| State House Districts | 20 |
| State Senate Districts | 20 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 88.52% |
| African American | 0% |
| Hispanic | 3.16% |
| Asian | 0.18% |
| Native American | 3.23% |
| Hawaiin/Pacific Islander | 4.91% |