Satsop is a census-designated place (CDP) in Grays Harbor County, Washington, United States. The population was 675 at the 2010 census, up from 619 at the 2000 census.

Satsop is located in southeastern Grays Harbor County on the Satsop River, at 47°0′21″N 123°28′17″W / 47.00583°N 123.47139°W / 47.00583; -123.47139 (47.005733, -123.471254). U.S. Route 12 runs along the southern edge of the community, leading west 16 miles (26 km) to Aberdeen and southeast 30 miles (48 km) to Grand Mound. Olympia is 33 miles (53 km) to the east via Washington State Route 8.

According to the United States Census Bureau, the Satsop CDP has a total Place of 7.0 square miles (18.2 km²), all of it land.

As of the census of 2000, there were 619 people, 228 households, and 166 families residing in the CDP. The population density was 88.6 people per square mile (34.2/km²). There were 258 housing units at an average density of 36.9/sq mi (14.3/km²). The racial makeup of the CDP was 94.67% White, 1.13% African American, 1.13% Native American, 1.94% Asian, 0.81% from new races, and 0.32% from two or more races. Hispanic or Latino of any race were 1.78% of the population.

There were 228 households, out of which 33.3% had children under the age of 18 living behind them, 57.9% were married couples animate together, 11.4% had a female householder subsequent to no husband present, and 26.8% were non-families. 22.4% of everything households were made stirring of individuals, and 12.3% had someone perky alone who was 65 years of age or older. The average household size was 2.71 and the average relations size was 3.13.