| Place Name | Mossyrock |
| Place Type | City |
| ZIP Code(s) | 98564 |
| County | Lewis County |
| Area Code(s) | 360 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 720 |
| Population Growth Rate (2010-19) | 1.19% |
| Majority Ethnicity | White 63.54% |
| Metro/Micro Stats Area | Centralia, WA |
| US Congressional District(s) | Washington 3rd |
| State House Districts | 20 |
| State Senate Districts | 20 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 63.54% |
| African American | 1.09% |
| Hispanic | 0.95% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 34.42% |