About This Place
Copalis Beach is a census-designated place (CDP) in Grays Harbor County, Washington, United States. The population was 415 at the 2010 census.
Copalis Beach is located at 47°7′4″N 124°10′42″W / 47.11778°N 124.17833°W / 47.11778; -124.17833 (47.117784, -124.178435).
According to the United States Census Bureau, the CDP has a total area of 3.8 square miles (9.8 km²), of which, 3.7 square miles (9.6 km²) of it is land and 0.1 square miles (0.3 km²) of it (2.63%) is water.