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

The official CDP name encompasses two closely-spaced unincorporated communities, Highfield and Cascade.

According to the United States Census Bureau, the CDP has a total area of 1.7 square miles (4.4 km2), all land.

There were 447 housing units at an average density of 281.2 per square mile (108.6/km2).

[5] Of the 447 households 34.3% had children under the age of 18 living with them, 47.2% were married couples living together, 21.9% had a female householder with no husband present, and 28.2% were non-families.