Santiago, Washington

Santiago is a census-designated place (CDP) in Grays Harbor County, Washington, United States, named after Joseph Santiago. The population was 52 at the 2020 census, up from 42 at the 2010 census.

The community is in the Quinault Indian Nation in western Grays Harbor County, along State Route 109, next to the Pacific Ocean. SR 109 leads north 5 mi to its northern terminus at Taholah and south 5 mi to Moclips. Point Grenville, a 120 ft cliff rising from the ocean, is 2.5 mi north of Santiago and is the site of the Quinault Nations' Haynisisoos Park. The Copalis National Wildlife Refuge occupies the ocean and rocks seaward from the coastline along Santiago and environs.

According to the U.S. Census Bureau, the Santiago CDP has an area of 4.06 sqkm, all of it land.