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

[3] According to the United States Census Bureau, the CDP has a total area of 0.8 square miles (2.1 km2), all land.

There were 125 housing units at an average density of 150.1 per square mile (58.0/km2).

The racial makeup of the CDP was 98.98% White, 0.34% Asian, and 0.68% from two or more races.

About 22.7% of families and 22.7% of the population were below the poverty line, including 44.2% of those under the age of eighteen and 51.3% of those sixty five or over.