Rossville is an unincorporated community and census-designated place in Baltimore County, Maryland, United States.

[3] According to the United States Census Bureau, the CDP has a total area of 5.4 square miles (14 km2), of which 5.4 square miles (14 km2) is land and 0.18% is water.

As of the census[5] of 2000, there were 11,515 people, 4,811 households, and 2,819 families living in the CDP.

There were 5,157 housing units at an average density of 955.1 per square mile (368.8/km2).

31.4% of all households were made up of individuals, and 4.0% had someone living alone who was 65 years of age or older.