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

As a major suburb of Halfway is part of the Hagerstown-Martinsburg, MD-WV, Metropolitan Statistical Area.

According to the United States Census Bureau, the CDP has a total area of 4.7 square miles (12 km2), all land.

There were 4,424 housing units at an average density of 944.0 per square mile (364.5/km2).

29.1% of all households were made up of individuals, and 16.1% had someone living alone who was 65 years of age or older.