Cascade Valley is a census-designated place (CDP) in Grant County, Washington, United States.

Cascade Valley is located in eastern Grant County and is bordered to the east and south by the city of Moses Lake, and to the west by the water body of Moses Lake.

[5] As of the census[4] of 2000, there were 1,811 people, 665 households, and 474 families residing in the CDP.

The racial makeup of the CDP was 79.73% White, 2.87% African American, 1.44% Native American, 0.33% Asian, 0.06% Pacific Islander, 11.32% from other races, and 4.25% from two or more races.

22.6% of all households were made up of individuals, and 6.8% had someone living alone who was 65 years of age or older.