| Place Name | Cathlamet |
| Place Type | Town |
| ZIP Code(s) | 98612 |
| County | Wahkiakum County |
| Area Code(s) | 360 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 608 |
| Population Growth Rate (2010-19) | 5.26% |
| Majority Ethnicity | White 96.2% |
| US Congressional District(s) | Washington 3rd |
| State House Districts | 19 |
| State Senate Districts | 19 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 96.2% |
| African American | 0.99% |
| Hispanic | 0.83% |
| Asian | 0.17% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.82% |